Ramp Definition and 687 Threads

Homework Statement Hello all, kinda angry at myself for posting this but my brain has hit a brick wall. This is an easy problem too... anyway. A frictioness ramp of mass M and incline θ sits on a frictionless surface. A block of mass m sits on the ramp. What horizontal force F must be applied...

A block of mass 0.6 kg rests on the inclined surface of a wedge of mass 1.8 kg. The wedge is acted upon by a horizontal force F and slides on a frictionless surface. The acceleration of gravity is 9.81 m/s If the coefficient of static friction between the wedge and the block is 1 and the...

A 100 N box is being pushed with a horizontal force F at 30 degrees on a frictionless ramp. Determine F and N (normal force). I got about 57.74 and about 115 for the second part (I don't know if it is right) Fcos(theta) -mgsin(theta)=0 for part A N-Fsin(theta)-mgcos(theta)=0 for...

Ok so I already know how to solve it by looking at an example my teacher did in class... This is what I did... 4. A 2.00 kg block is held in equilibrium on an incline of angle θ = 70° by a horizontal force vector F applied in the direction shown in the figure below. If the coefficient of static...

Hello, here is my problem. http://imageshack.us/a/img543/827/rampfunction.png I'm having a little trouble coming up with the function f(t). I have something like: f(t) = [(A/T)*t -A] + [(A/T)*(t-2T) -2A] + A*1(t-3T) Am I on the right track here? Thanks!

Homework Statement A block with a mass of m is initially moving up the incline and is increasing speed with an acceleration of a. The applied force F is horizontal. The coefficients of friction between between the block and incline are μs=S and μk=K. The angle of the incline is θ. What is the...

I have no idea how to solve this problem & I need help. Please! 5) A 40.0 kg wagon is towed up a hill inclined at 18.5° with respect to the horizontal. The tow rope is parallel to the incline and has a tension of 140 N in it. Assume that the wagon starts from rest at the bottom of the hill...

Homework Statement A mass m{1} = 5kg is on a frictionless ramp and connected to a cable that passes over a pulley which is then attached to a second hanging mass, m{2} = 10kg. How long will it take the boxes to move 3m if they are released from rest? F{A}= Forces acting on hanging object...

Homework Statement Greetings, I'm new here :). Straight to my problem. I have a ramp. A ball accelerates down at varying angles, and then it reaches the flat part and travels only in the x-direction. I need to find the velocity of the ball as it moves on this flat part, as it is no longer...

Help please! simple Physics frictionless crate on ramp problem! Urgent!? A crate of mass m = 100 kg is pushed at constant speed up a frictionless ramp (θ = 30.0°) by a horizontal force F. What are the magnitudes of (a) F and (b) the force on the crate from the ramp? So my teacher did this...

Quick question on the ramp function, the ramp function can operate like a unit step when used in a gate function correct? Like would r(t)-r(t-2)=r(t)(r(2-t)) my teacher and book gave a really poor explanation of how the ramp function behaves, I know it only has significance when its arg>0. And...

Homework Statement A skateboarder starts up a 1.0--high, 30 ramp at a speed of 7.9 . The skateboard wheels roll without friction. How far from the end of the ramp does the skateboarder touch down? Homework Equations x=x0+v0t+.5(a)(t2) v=v0+at The Attempt at a Solution This...

Challenging Ramp and Pulley Problem Homework Statement Two blocks of masses 2m and m are connected by a weightless string over a frictionless, massless pulley, as shown in the figure. The coefficient of kinetic friction between the block and the incline is \mu. The system is in a uniform...

Homework Statement A box of weight 200N is pushed so that it moves at a steady speed alog a ramp, through a height of 1.5m. The ramp makes an angle of 30° with the ground. The frictional force on the box is 150N while the box is moving. What is the work doe by the person? Homework...

If we had a cylinder rolling down a ramp, with scalar friction coefficient us and kinetic friction coefficient uc, and we assume for example that the inclination of the ramp is enough to make the cylinder reach the acceleration needed to exceed the scalar friction of rolling. It means that the...

Homework Statement A ball with mass 1.0 kg and radius 0.20m rolls without slipping along level ground with a speed of 10 m/s. The ball then rolls up an incline reaching a maximum vertical height of 8.0 m. What is the moment of inertia of the ball? (Do not assume the ball is a uniform sphere)...

Homework Statement I need to find the horizontal velocity of an object on a ramp where the first height is 5.0m and the second height is 3.0m? I also need to find the time it takes to fall from the ramp, and the distance it falls away from the ramp. I am only given the two heights, an initial...

Homework Statement In the design of a supermarket, there are to be several ramps connecting different parts of the store. Customers will have to push grocery carts up the ramps and it can't be too difficult. An engineer has done a survey and found that no one complains if the force required is...

Homework Statement A wet bar of soap (m=150g) slides down a 2m long ramp at 7.3° relative to the horizontal. How long does it take to reach the bottom? Homework Equations d = 1/2at2 The Attempt at a Solution The answer is apparently 1.81 seconds, although I can't figure out how...

Homework Statement Ok so I had this problem on my quiz today and I am really anxious to see if i got it right. It went something like this: You have a frictionless horizontal platform and a ramp with kinetic friction of 0.3. The ramp is 20 degree of the ground. A 2 kg block/object is...

Homework Statement A block of mass 30 kg rests 12 m from the bottom of an inclined plane that is at an angle of 60 to the horizontal. It is connected by a rope of negligible mass via a frictionless pulley to a bucket of mass 5 kg of water, hanging vertically as shown in Fig. Q3. The static...

Homework Statement Problem: "On the 50 degree ramp below an empty barrel is sliding up it to get filled at a factory. The empty barrel has a mass of 24kg and has an initial velocity of 1.2m/s. The kinetic coefficient of friction between the barrel and the ramp is μ =0.48 Finally a...

Homework Statement Hello Physics World, This is a question that was presented in my High School Science Challenge by a teacher. It is sort of a brain teaser and we will be told the answer to it by next week. However, I was wanting to know your input. So, looking at the image above...

Homework Statement A 2.00kg mass starts from rest and slides down a frictionless inclined plane that makes an angle of 30 degrees with the horizontal. Determine its speed after it has slid a distance of 3.00m down the ramp. Homework Equations I am leaning about Laws of Conservation of...

Homework Statement I am teaching a class where we are trying to find the K of I=1/2Kmr^2 from rolling a very thin cylinder down a ramp. Homework Equations Linear Forces: mgsinθ-F(friction)=ma angular forces: τ=Iα where τ=F(friction)r, I=Kmr^2 and a=αr distance=1/2*a*t^2 since the...

1. Consider a ramp of length L inclined at an angle Ɵ > (the angle of repose) to the horizontal. A block of mass m is placed at the high end and released from rest. (a) If µ = 0; what is the speed of the block at the bottom of the ramp? (b) Suppose now, that µ ≠ 0: What is the speed at some...

1. Consider a ramp of length L inclined at an angle Ɵ > (the angle of repose) to the horizontal. A block of mass m is placed at the high end and released from rest. (a) If µ = 0; what is the speed of the block at the bottom of the ramp? (b) Suppose now, that µ ≠ 0: What is the speed at some...

Homework Statement This isn't really coursework or homework, but something I really want to confirm. There is a ramp of height h on an angle θ that a car is placed on that leads to a wall perpendicular to the ground (looks like this: |∠). When calculating velocity of the car when it hits...

Homework Statement The spring in the figure below is initially compressed by 0.4 m in the position shown. If released from this position, block A travels 0.9 m before coming to a stop. The kinetic coefficient of friction is 0.8. What is the spring constant? (The spring is not fastened to...

Homework Statement A block of mass 2.96 kg is sliding up a ramp with an initial speed of 12.8 m/s. The ramp is inclined from the horizontal at an angle of 36.4 degrees and the coefficient of kinetic friction is \mu=045. What is the displacement of the block along the ramp from the initial time...

Homework Statement A uniform solid cylindrical log begins rolling without slipping down a ramp that rises 28.0 above the horizontal. After it has rolled 4.20 m along the ramp, the magnitude of its linear acceleration is closest to Homework Equations The Attempt at a Solution...

Hi physicsforums mates, I came across an interesting application question online on optimal mass / velocity. The context was given that an object on wheels have to be released down a ramp of angle θ (assume to be anything). It has to travel a far distance after reaching the end of the ramp and...

Hello! I'm trying to activate a solenoid with a linear ramp in voltage of 0 - 24VDC in 2 seconds. An RC series circuit helps achieve soft start but in an exponential way (with 63% of supply voltage in 1 time constant). Can I use a single circuit for charging and discharging? (linear ramp down...

Homework Statement http://imgur.com/ZkjXv The given answers are (b) .309 m/s^2 (c) T1= 7.67N, T2=9.22N Homework Equations I_disc = .5(mass_disc)r^2 Sum of Torque = I α a = r α The Attempt at a Solution We will define the system moving right and down as positive to get a positive...

Homework Statement A pipe(thin ring)has a mass of 500kg and radius of 0.5m and rolls without slipping down a 300kg ramp. If the ramp is free to move horizontally(frictionless, determine the acceleration of the ramp. (angle of ramp is 30 degrees) Homework Equations Fs (static friction) =...

[b]1. Homework Statement Jane, mass of 55kg holds one end of a vertical rope that passes up over smooth rock and down along a 30 degrees sloping hill as shown. But Josh, mass of 95kg tightly holds the other end of the rope. Assume no friction. Calculate the acceleration. The picture is included...

Kinematics -- marbles rolling down a ramp and into sand Homework Statement 14) The student carries out an experiment to investigate momentum and collisions. A ball bearing is rolled down a ramp clamped at the edge of a bench. The ball bearing makes a head-on collision with a marble at the...

Homework Statement A ramp leading up to a loading platform is 3 m long and 1 m high at its highest point. If the friction is ignored, what work is needed to slide a 600-kg crate up the ramp at a constant speed? a) 2.00 *10^2 J b) 5.89 *10^2 J c) 1.80 *10^3 J d) 5.88 *10^3 J I...

Homework Statement The coefficient of friction is to be found from a skateboard and rider rolling down a ramp, which has an angle of 5 degrees. The skateboard accelerates at .5308 m/s^2. The mass of the rider and skateboard is 91.3 kg, or 895 Newtons. The other data would be gravity...

Homework Statement A stunt car is driven from a 10° ramp at 40m/s. How far away should the landing ramp be. (It lands at the same level as it was launched from.)Homework Equations Answer is 54.7mThe Attempt at a Solution v^2 = u^2 + 2as (v^2 - u^2)/(2a) = s (0 - 40^2) / (2 x 9.8) = -81.6

Homework Statement A force F pushes a block of mass m up a frictionless incline as shown below. The block moves at a constant speed of 6.00 m/s until it contacts the relaxed spring which has a spring constant k = 200 N/m. At the point where the block touches the spring, the force is...

°Homework Statement The figure shows two boxes, A and B, on a ramp. The ramp forms a 20° angle with the horizontal. Box A is in front of Box B and they are touching. Box A is 2 meters from the bottom of the ramp. The mass of A is 3 kg and the mass of B is 10.5 kg. The coefficient of kinetic...

Homework Statement I am experimentally determining the relationship between the mass of an object and how far it slides from the bottom of a ramp? That would be my X(final) right. I have to derive a formula between the mass of the object and how far it slides. (need help getting...

Homework Statement We are to use the Ramp: Forces and Motion simulator located at http://phet.colorado.edu/en/simulation/ramp-forces-and-motion. First part we are to chose 2 objects. I chose the small crate and textbook and then slide then down a ramp at 30 degree angle. Using the...

Homework Statement A bowling ball of mass 2.2kg is rolling along a track at 3.2m/s when it reaches a ramp angled at 55°, The ball rolls up the ramp to the top where the track levels out again, and the ball rolls at 0.3 m/s. How long is the ramp? mass = 2.2kg v1 = 3.2 m/s v2 = 0.3 m/s...

Homework Statement 2 masses m1=50g and m2=5g are connected as shown (sori walang pci) m1 is free to move along a horizontal frictionless table. Neglecting the mass of the cord connecting the two masses and assuming a frictionless pulley. Determine the accelereation of the system of blocks...

A mass m is moving at a speed of Vo and slides smoothly onto a sloped big block of mass M. The big block can also move on the table surface. Assume that everything moves without friction. After the small block reaches the height h on the slope It slides down. Find the height h. Problem Number...

Homework Statement A 130 kg crate is pushed at constant speed up the frictionless 23° ramp shown in the figure. What horizontal force F is required? Homework Equations F=ma F(parallel)=mgsin(theta) F(perpendicular)=mgcos(theta) The Attempt at a Solution I know that because it...

I've asked this question before. But still I got some unanswered ones. I am really tired, but I cannot sleep if I got something laying there, tingling me. http://pokit.org/get/cfb750b79f49cfc12dc51a74a37f576e.jpg This is digital ramp. In attachments I added a full circuit, from...

What is the formula to find the speed of a ball at he end of a curved ramp?