All Questions
58 questions
1vote
0answers
116views
Paradoxical Behaviour While Dealing with Rolling with Slipping (HW) [closed]
Edit: Ok, I don't understand how this counts as a 'check my work' question given that there is clearly a conceptual error here that I am not getting at. If my purpose was only to find out how to solve ...
1vote
0answers
36views
Frictional Torque on a Rotating Triangular Lamina [closed]
I was solving this problem, when i came across the issue i am about to ask here, A uniform right angled triangular lamina is placed on a horizontal floor, which is not friction less. One of the acute ...
- 183
2votes
1answer
272views
At what $ω$ would the dust particles fly off the tilted rotating disc?
I've been struggling with question below: "A metal disc of radius R can rotate about the vertical axis passing through its centre. The top surface of the disc is uniformly covered with dust ...
- 367
0votes
1answer
75views
Keeping the tangential velocity zero in rolling motion down an inclined plane
I know that the direction of friction has been discussed extensively here. However, I am still wondering about a particular issue (applies for slipping and no slipping). Consider this book: https://...
- 19
0votes
2answers
161views
How to calculate required frictional force required to prevent rotation of hollow cylinder? [closed]
Imagine a scenario where you have a hollow cylinder and you press this hollow cylinder down onto some surface (lets imagine its in the x-y plane) such that it is not rolling but its cross section is ...
1vote
1answer
79views
Calculating moment of inertia for a hollow cylindrical shell of varying amounts of water within it for an experiment about rotational motion [closed]
I am doing an experiment with the overall research question of: To what extent does the amount of fluid within a hollow cylindrical can affect its dynamics while rolling down an inclined plane I was ...
1vote
1answer
61views
What is the kinetic energy of a hollow sphere rolling down an incline while slipping? [closed]
A hollow sphere is released from rest from the top of an incline with angle $\theta$ and rolls down while slipping. The coefficient of kinetic friction between incline and sphere is $\mu_k=\frac15\tan\...
0votes
2answers
154views
Why is the moment of forces "torque" 0 here?
Why is the moment of forces "torque" 0 here? Let's say we have this situation A spool of mass $M$ rests on an inclined plane a distance $D$ from the bottom. The spool has a maximum radius $...
user348222
1vote
2answers
520views
Centripetal Force Acting on a Belt and Pulley System [closed]
Just a warning: I am an A Level student looking for a simple but thorough explanation. I am happy to be introduced to new ideas, but a sesquipedalian answer with formulae that aren't derived will only ...
-1votes
4answers
1kviews
What is the distance travelled by a rolling object which is released from an inclined plane?
Suppose that a solid sphere with moment of inertia $I=\frac{2}{5}mr^2$ is rolling down an inclined plane. It's velocity at the end can be calculated using $mgh=\frac{1}{2}mv^2 + \frac{1}{2} I w^2$. ...
- 67
3votes
3answers
686views
Why is the direction of friction different in case of rolling on plane surface and on an inclined plane?
I was studying the rolling of spherical objects on plane surfaces and inclined planes. I had doubts about the direction of friction in both cases. Case 1- In the first case i.e. rolling on the plane ...
1vote
2answers
729views
Frictional force on the front wheel of a rear wheel drive car
In the above problem, it is stated that the front wheels are "free to roll". The solution to this problem doesn't take into account the friction acting on the front wheels in the free body ...
- 381
2votes
4answers
726views
A pure rolling sphere problem
Question: A sphere $S$ rolls without slipping, moving with a constant speed on a plank $P$. The firction between the upper surface of plank $P$ and the sphere is sufficient to prevent slipping. ...
- 2,062
2votes
1answer
345views
What is the work done by friction on a body which is rolling with slipping? [closed]
A hollow sphere is released from the top of an inclined plane of inclination $\theta$. (a) What should be the minimum coefficient of friction between the sphere and the plane to prevent sliding? (b) ...
0votes
3answers
142views
While a solid cylinder of radius $R=3m$ and mass $M= 1kg$ rotates at an angular velocity $\omega=29 rad/s$ it touches a frictional corner [closed]
--- The friction coefficient =0.1 how many revolutions does the cylinder make until it stops? So it's obvious that we'll first have to use the relation $I\alpha=\tau (about centre)$ and that the net ...
