Frictionless Definition and 475 Threads

Homework Statement A 250 g block is resting on a frictionless horizontal surface. The block is attached to a spring. The mass-spring system is compressed by a 2.5 N force and then released from rest. (a) The resulting oscillation has a 1.0 s period. What is the spring constant? (b) What is...

Homework Statement A small cylindrical disk hits a more massive square block directly head on. Both objects slide without friction on a smooth ice surface. The block is pushed forward and the disk bounces back. Which statement is true? a) The block pushes the disk. b) The disk exerts a...

A massive steel cable drags a 20 kg block across a horizontal, frictionless surface. A 100 N force applied to the cable causes the block to reach a speed of 4.0 m/s in a distance of 2.0 m. What is the mass of the cable? I hate to ask you folks for a lot of help. But I have no idea...

Homework Statement A bug lands on top of the frictionless, spherical head of a bald man. It begins to slide down his head. Show that the bug leaves the head when it has dropped a vertical distance 1/3 the radius of the head. Homework Equations Not sure. Maybe: E_f - E_i = 0...

Homework Statement A block of mass m = 2.00 kg is released from rest at h = 0.500 m from the surface of a table, at the top of a θ = 35.0° incline as shown below. The frictionless incline is fixed on a table of height H = 2.00 m. How much time has elapsed between when the block is...

Homework Statement Two boxes with different masses M1 = 1.3 kg and M2 = 2.2 kg are tied together on a frictionless ramp surface which makes an angle = 29° with the horizontal (see the figure below). (the figure is essentially two boxes tied together by a rope and then another rope tying the...

Homework Statement A block of ice slides down a frictionless ramp at theta = 60 degrees while an ice worker pulls on the block (via a rope) with a constant force of 50.0 N. The block slides a distance d = 0.8m along the ramp and its kinetic energy increases by 128 J. (a) Calculate the work...

Homework Statement (a) A box is placed on an frictionless inclined plane with an angle of 18° from the horizontal. The box has a mass of 35 kg, what is the magnitude of the acceleration of the box along the inclined plane? (b) What magnitude of force would you need to apply to the box in...

A friend and I have had an ongoing discussion about whether or not it would be possible for a person to go from a prone position to a standing position on a frictionless surface. He says that it would be impossible while I say that, although difficult, it would be possible after some trial and...

Homework Statement Well I figured out the first problem I had posted so here's a new one :) If two objects of different masses are sliding along a frictionless surface at the same speed and they both slide of the same frictionless surface. which rises to a greater height? I want to say they...

Question Details: a 21 kg block sliding on a 13 kg block. All surfaces are frictionless. Find the magnitude of acceleration of each block and the tension in the string that connects the blocks. Find the acceleration m/s2 (acceleration of blocks)? and the force N (tension in string) ? Have...

Homework Statement Two masses are connected by a string passing over a frictionless pulley. show that for this system to remain in static equilibrium where m1 sin O (theta) > m2 that (static friction coefficient) > or = tan O - m2 / m1 sec O. Homework Equations static friction...

Homework Statement An object of mass 10kg is at rest at the top of a frictionless incline. The mass is 2m higher than the elastic spring (k=10 N/cm). What is the objects maximum speed? What is the maximum spring compression? I think I may have got the answers but I'm not sure. Can someone...

Homework Statement 1 An object is pushed up a smooth incline of 30 degrees with a speed of 4m/s. In seconds, how long will it take before the object stops and reverses direction? Vf= Vo - at Vf= Vo - at 0 = 4 - (9.8)t t = 0.41s I know this is wrong because the angle isn't accounted for, but...

Homework Statement A 2.6kg block slides along a frictionless horizontal with a speed of 2.9m/s. After sliding a distance of 6m, the block makes a smooth transition to a frictionless ramp inclined at an angle of 12 degrees to the horizontal. How far up the ramp does the block slide before...

I am stuck on this 3 part problem and don't really know what to dooo, any help would be greatly appreciated =) A block (mass 569 grams) starts at rest and slides down a frictionless track except for a small rough area on a horizontal section of the track. It leaves the track horizontally...

Homework Statement Consider a simple frictionless roller coaster. It begins from rest at x = 0 at a height of y = H. Then it drops into a dip, reaching a minimum at x = 100, with zero height (y = 0). Finally, it goes back up and reaches the crest of a small hill of height y = H/2 at x = 200...

Homework Statement A block with mass m_1 = 2 \textrm{kg} slides along a frictionless table with a speed of 10 m/s. Directly in front of it and moving in the same direction is a block of mass m_2 = 5 \textrm{kg} moving at 3 m/s. A massless spring with spring constant k = 1120 N/m is attached...

Homework Statement On a frictionless table, a glob of clay of mass .48kg strikes a bar of mass .94kg perpendicularly at a point .34m from the center of the bar and sticks to it. 1. If the bar is .90m long and the clay is moving at 8.4 m/s befor estrikning the bar, what is the final speed of...

About 8 years back i remember my father telling me about a guy who had invented a set of frictionless ball bearings using magnets, he installed the ball bearings on an old buick or somthing of the sort that was a heavy boat of a vehicle. i remember my father telling me that the guy had pushed...

An old oaken bucket of mass 6.75 kg hangs in a well at the end of a rope. The rope passes over a frictionless pulley at the top of the well, and you pull horizontally on the end of the rope to raise the bucket slowly a distance of 4.00 m. How much work do you do on the bucket in pulling it up?

While standing on frctionless ice, you (mass 65.0 kg) toss a 4.5 kg rock with initial speed 12.0 m/s. IF the rock is 15.2 m from you when it lands, (a) at what angle did you toss it? (b) How fast are you moving? I'm still having trouble with these.

Homework Statement A 2.00-kg block is pushed against a spring with negligible mass and force constant k = 400 N/m, compressing it 0.220 m. When the block is released, it moves along a frictionless, horizontal surface and then up a frictionless incline with slope 37 degrees Homework...

hi. can anyone push me in the right direction with the followin problem, please? Homework Statement a cart is moving on a frictionless surface at a speed of V_0 the mass of the cart is M. it suddenly starts to rain at time t=0. the rain is dropping vertically at a rate of q gk per...

Homework Statement A child starts from rest and slides down a frictionless slide. In terms of R and H, at what height h will he lose contact with the section of radius R? (child starts at the top with height H, at the bottom the slide flattens out and then forms a quarter circle to the...

Two blocks are free to slide along a frictionless wooden track. A block of mass m1=5 kg is released from point A. Protruding from its front end is the north pole of a strong magnet, repelling the north pole of an identical magnet embedded in the back end of the block of mass m2=10 kg, initially...

Hi there, I'm new to this forum but I'm very interested in maths and physics. I look forward to learning from the people here and hear some of your insights. Today I have a question involving forces. I've finished the problem and I was just wondering if anyone here may please check if it is...

Here's a cute problem I came across recently. Suppose you have a rubber band with spring constant k, mass m and unstretched radius r. Now suppose you have a frictionless cone and the angle of the peak is 2 \theta (that is, if you project the shape of the cone onto a plane it looks like a...

Which force is responsible for holding a car in a frictionless banked curve? The answer is the horizontal component of the normal force. But could anyone explain why that is? I thought it would be the horizontal component of the weight since normal force is vertical?

Two packing crates of masses m1 = 10.0 kg and m2 = 7.00 kg are connected by a light string that passes over a frictionless pulley. The 7.00 kg crate lies on a smooth incline of angle 43.0°. Find the acceleration of the 7.00 kg crate up the incline. Find the tension in the string. I found the...

Now I'm confused again... What kind of motion does a constant, non-zero force produce on an object of constant mass? a. constant speed b. constant acceleration c. increasing acceleration d.it depends on the speed of the object I know that if there's no friction, the force on the object...

I want to make a simple game, where you have a spaceship with thrusters on the left and right. Firing one at a time both spins and propels the ship. The problem is that, in physics 1000, we always assumed our rolling motion was on a surface, allowing us to relate the linear speed to the...

A uniform ladder of length 9 m leans against a frictionless vertical wall making an angle of 47° with the ground. The coefficient of static friction between the ladder and the ground is 0.41. If your mass is 74 kg and the ladder's mass is 33 kg, how far up the ladder can you climb before it...

I have a question dealing with acceleration. A car is on a frictionless ramp. The car is tied to a string that goes over a pulley and over the pulley there is a hanger. As the mass of the hanger increases should the acceleration of the car increase, decrease or stay the same. I thought it...

I have a frictionless force problem. A car is traveling north and there is a Y intersection. 480N to the left at 11 degrees, 400N to the right at 26 degrees. Can I find the magnitude and direction of these 2 forces without the mass of the car? I am coming up with 155.6N but am still...

This is the most horrible question I've ever had to do. It should be simple, but it's not! A cart moving at 8 m/s on a flat surface goes up a frictionless ramp tilted 10 degrees from the horizontal. How far up the ramp should the cart go? It's not worded like that exactly, but the question...

A thin homogeneous rod hsa length L and mass M. Initially the rod is vertical at rest on a frictionless surface. The rod is given a slight push and begins to fall in the gravitational field. 1) write an expression for the kinetic energy T of the rod as functions of M,L,g, theta and d theta/dt...

I have a big physics test tomorrow:cry: , and I can't figure out how to solve this type of problem: 2 boxes, one on a table attached to a string attached to another box hanging off the table. (the table is a frictionless plane)--It wants me to find the force of tension on the string. the...

Ok, so I've got this physics question on a review sheet for a test tomorrow...and I keep getting a bunch of random answers that don't make sense...see if you can help me... Someone kicks the football from ground level (0 meters) with an initial velocity of 32 meters/second, 34 degrees above...

A small bead can slide without friction on a circular hoop that is in a vertical plane and has a radius of [i tex]0.100 m[/itex]. The hoop rotates at a constant rate of 4.00 \frac{rev}{s} about a vertical diameter. (a) Find the angle \theta at which the bead is in vertical equilibrium. (It...

A 2.0 kg mass slides down a frictionless inclined plane that makes an angle of 30 degrees with the horizontal. The sass starts from rest. What is its speed after it has slid a distance of 3.0 m along the incline? I got: F = (sin30)(9.8) F = 4.9 N W = Fd W = (4.9) (3) = 14.7 J W =...

On a frictionless table, a glob of clay of mass 0.40 kg strikes a bar of mass 1.74 kg perpendicularly at a point 0.15 m from the center of the bar and sticks to it. If the bar is 1.14 m long and the clay is moving at 6.6 m/s before striking the bar, what is the final speed of the center of mass...

I searched for this problem and could not find satisfactory information or information that applied to my specific concerns. The wedge of mass M is resting on a horizontal surface. A block of mass m is placed on the wedge and the whole system is released from rest. There is no friction...

A block is projected up a frictionless plane with initial speed v0 = 3.50 m/s. The angle of incline is theta = 32 degrees. (a) How far up the plane does the block go? (b) How long does it take to get there? (c) What is its speed when it bets back to the bottom? I read through the solution...

a 1kg box on a 30degree frictionless incline is connected to a 3kg box on a horizontal frictionless surface. The pulley is frictionless and massless. A)if the magnitude of F is 2.3N what is the tension in the connecting cord? I found all of my formulas M1 "X" direction-----T-M1g = M1a...

Find an expression for the magnitude of the horizontal force F in the figure for which m1 does not slip either up or down along the wedge. All surfaces are frictionless. since it has nothing to do with the friction i am thinking that m1 and the force have to have the same acceleration in the...

I am supposed to take this: http://www.recklesscaution.com/original.jpg and draw the vector diagram of the forces acting on the object. So if it is frictionless, I believe this is all I would need: http://www.recklesscaution.com/vector.jpg Is that correct?

A 2.12 kg mass on a frictionless horizontal track is attached to the end of a horizontal spring whose force constant is 4.83 N/m. The mass is displaced 3.12 m to the right from its equilibrium position and then released, which initiates simple harmonic motion. What is the force (including...

Here is the problem: The velocity of a 2.3 kg block sliding down a frictionless inclined plane is found to be 1.12 m/s. 1.20 sec. later it has a velocity of 5.08 m/s. What is the angle of the plane with respect to the horizontal? There is quite a bit of information here. I have gathered some...

Fro some reason can't figure this one out: A box is sitting at a frictionless ramp, with a force of 150 N acting on the box, perpendicular to the ground. The ramp is at 25 degrees towards the normal. a)Determine the force parallel to the surface of the ramp, that would keep the box from...