Sliding Definition and 733 Threads

I have several problems like this and am confused at how to solve. A small box of mass 9 g is initially at some angle with respect to the ploar axis of a spherical dome of radius 3 m as shown in the figure. Starting from rest, the box slides down along the frictionless spherical surface. The...

Does anybody know a website that gives sliding friction (blocks on planes, etc.) example problems? I am trying to figure out how to calculate the coefficient of sliding friction, but I'm having problems doing so. I know the general equation is: coefficient of sliding friction = friction...

A 393 kg piano slides 3.7 m down a(n) 27° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. (a) Calculate the force exerted by the man. (b) Calculate the work done by the man on the piano...

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...

Can a bead desecnd down a helix have zero vertical component for its acceleration? (i.e. If I found my result to only has coefficients for its horizontal radial component unit vector (e_r), but zero for that of the vertical unit vector (e_z) ! ... That means I got zero vertical component for...

Hi, this is my first post on here hope I can answer some in the future. I've finished everything except these two problems. I've got the answers except I can't figure out how to arrive at the conclusions. 1) A 4.2-kN piano is to be slid up a 3.5-m frictionless plank at a constant speed. The...

I have to do a lab this grading period, which I chose out of a hat. The lab is on the coefficient of sliding friction. I have to have an experiment, but I do not want to just have different objects slide off a ramp or anything simple like that. Does anybody have a good experiment idea that...

http://geomaps.wr.usgs.gov/parks/deva/racetrack.pdf [link updated] 6/20/09 New Paper Claims Explanation https://www.physicsforums.com/showthread.php?t=60676&page=5#90

A block of mass m is attached to a horizontal spring with constant k. resting on top of this block is another block of mass m. a coefficient of static friction mu exists between the two blocks. now suppose the spring is initially at equilibrium length, and someone gives it a push. the block...

This isn't really homework because I'm not doing it for school. I'm on my holidays at the moment, and I'm trying to do a bit of Physics on my own. As you can imagine, I have not gotten far, and am stuck on this problem: A stone slides in a straight line across a frozen pond. Given that the...

A 26.0 kg box slides 4.0 m down the frictionless ramp shown in the figure, then collides with a spring whose spring constant is 170 N/m. 1-- What is the maximum compression of the spring? 2-- At what compression of the spring does the box have its maximum velocity? this is killing...

Hi we're doing a project in class where we make roller coasters and we test them out by sending a marble down them. As a bonus question my teacher asked why there would be an error in the calculations we do (finding speed at different locations of the roller coaster) if we're using a...

Hey I am having trouble doing this question--> A gardener exerts a force of 150 N [ 22 degrees below the horizontal] in pushing a large 18 Kg box a distance of 1.6 m. The coefficient of kinetic friction between the box and the floor is 0.55. Question --> Use Newton's law to...

Let say we have a sliding box. The box is sliding because of an constant force perpendicular to the box. There is no friction and no air restistance. Does the speed of the box increase or is it constant. ?

Consider a block of mass 'm' kept on the hypotenuse of a right triangular wedge of mass 'M'. Calculate the accelaration of the wedge and the block. Hence find the force that should be applied to 'M' so that 'm' does not move?

Two blocks, a one foot cubic block in sitting on top a four foot cubic block. Both blocks are moving forward at 36 fps and instantly begin to decelerate...the larger block with cof of .9 (-28.98 fps/sqr) and the top block with cof of .3 (-9.66 fps/sqr). Trying to determine the time/distance...

Can you solve the "particle sliding on a movable inclinded plane" problem... ...using Newtonian Mechanics? No Lagrangians.

Q. Two blocks are sliding across a table pushed by a force F from the left equal to 23 N. The force of friction from the table on m1 is 4 N and the force of friction on m2 is 12 N. m1 = 2 kg and m2 = 6 kg. a) What is the magnitude acceleration of the entire system? I figured this part...

A uniform chain of length 8.00m initially lies stretched out on a horizontal table. a) If the coefficient of static friction between the chain and the table is 0.600, show that the chain will begin to slide off the table if at least 3.00m of it hangs over the edge of the table. b)...

Can someone please help me with this problem? I've tried a few different things but none of them worked... The weight of the block in the drawing is 99.0 N. The coefficient of static friction between the block and the vertical wall is 0.510. (a) What minimum force F is required to prevent...

Hello, I've just joined this forum in hopes of finding some help to my physics problems. I usually can find out what to do by myself, but this problem seems to be requiring some advanced concepts...or it maybe is so that I'm just not using my noodle. A car is sliding down an inclined plane...

Please Help, I've asked two physics majors for help now and they can't tell me can anyone be of assistance? A block with a mass m=16.5 slides down an inclined plane with a slope angle of 32.7 degress with a constant velocity. It is then projected up the same plane with an initial speed of...

Greetings fellow physicists! I am stuck on a problem, please help. The situation is a block on a rough incline (trainglular block), the incline itself is on a frictionless table. A horizontal force is applied to the incline. The question is to find the minimum horizontal force needed so that...

A block lies on a smooth plane tilted at an angel 25.5 degrees to the horizontal with coefficient of kinetic friction = 0.17. What is the acceleration of the block as it slides down?

An object slides down an inclined plane of angle 30 degrees and of incline length 4m. If the initial speed of the object is 5m/s directed down the incline, what is the speed at the bottom? Neglect friction. I used Kinitial+Uinitial=Kfinal+Ufinal. I got 2gh+5^2=v^2, but when I solve for v...

A 10 kg block slides from rest down a 5m long ramp. If the coefficient of friction between the block and the ramp is 0.4, what is the final velocity of the block when it reaches the botton of the ramp? I set this into two Fnet equations, x and y. I then solved for the acceleration in x...

Imagine an initially stationary block is placed at some height on a frictionless ramp. The ramp has several hills and valleys in it. Assume the block never flies off the ramp, the hills have identical circular tops, and the hills are of progressively greater heights, all shorter than the height...

i'm trying to learn this stuff on my own so please bear with me. here's the problem: you have two mass, a 10kg on a frictionless 35 degree inclined plane, which is attached to 20kg mass via a pulley cord to hang vertically. Whats the aceleration? Solution: for the box hanging freely...

I'd appreciate a tip here. A 10 kg object on a horizontal, unsmooth table is pushed to the right so as to have an intial velocity of 20 m/s. It comes to rest 5 seconds later, during which time its acceleration (deceleration?) was constant. I've already figured out the acceleration (4 m/s^2)...

I'd like to make sure I understand it. It reads... "Two objects, A and B, are placed in contact with each other on a horizontal, frictionless surface. Object A weighs 1.5kg, and B weighs 2.5kg. If a force of 8.0N is exerted on the surface of object A in contact with B AND on the opposite...

Ok, I have a maths question. This is a little different because I don't want the answer, I want the formula so I can work out the answer (and future answers) myself. lol it's not very good self-learning with a book that doesn't tell you much. Anyway here is the question. A solid uniform cube...

when you close those sliding doors really hard the door will eventually bounce back out about half way where you have pushed the door. is it because every force has an opposite side of force ? for example when we put the book on the table, the gravity force is pulling the book down but the...

Ok, I have been going over this problem and the answer I got just doesn't make sense...help! It's a really easy problem (apparently) but the answer that I keep getting doesn't make sense to me...please let me know what I'm doing wrong or forgetting or whatever... I thought it'd be...