Linked Questions
11 questions linked to/from Why acceleration comes to be different when using $F=ma$ and when using $\tau = I \alpha $?
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Why do the expressions for an object rolling down an incline not depend on the coefficient of static friction?
In my physics course, we are doing an experiment rolling disks and spheres down an incline (assuming there is no slipping). In doing the derivations (assuming a moment of inertia of $\frac25mR^2$ for ...
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Torque due to friction on a series of disks
Recently I was looking at two situations involving friction and torque.
The first situation seemed pretty straightforward at first. A disk of mass $m$ and radius $r$, with a coefficient of static ...
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Can we know when rolling occurs without slipping?
In school we solve a lot of physics problems involving rolling cylinders/hoops/wheels. Often it is specified in the question statement that "rolling can be assumed to occur without slipping". Then we ...
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What is the exact role of friction in rolling without slipping?
When an object rolls along a plane, we say that for the object to roll without slipping, the velocity of the center of mass must be equal to angular velocity times radius, so that at the point of ...
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Friction due to pure rolling on an inclined plane
When a body is executing pure rolling we know that the point of contact of the body with the ground is at rest with respect to the ground. If that's the case no friction should act as it is stationary....
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Where does it getting wrong , when using $v^2 - u^2 = 2as $ down the incline, for different object having different moment of inertia?
Well, Consider a situation there is a sphere and a ring, of same mass $M$ and radius $R$. They both starts rolling down the inclined plane. We know moments of them as well, $$I_\text{sphere}=\frac{2}{...
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Why is the direction of friction different in case of rolling on plane surface and on an inclined plane?
I was studying the rolling of spherical objects on plane surfaces and inclined planes. I had doubts about the direction of friction in both cases.
Case 1-
In the first case i.e. rolling on the plane ...
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Can rolling without slipping occur without friction?
If a body is rolling without slipping is it necessary that there is friction acting on it ? I encountered a question in which there is a spherical body and a force is being applied on its top point ......
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How do objects begin to roll if static friction equally opposes the applied force?
So, we can use the torque $$T = I\alpha$$to calculate the torque and thus the acceleration of friction force when the object is rolling without slipping. Then plug that in into $$F = ma$$ (As ...
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Rolling without slipping forward force
I'm studying rolling without slipping, I want to find the net force making a wheel go forward when applying a torque about the axle of the wheel.
In this page https://www.school-for-champions.com/...
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Why is is harder to get an object to slide than it is to roll given that $\mu_s>\mu_k$?
I learned that rolling involves the coefficient of static friction unlike sliding that involves the coefficient of kinetic friction. It's known that the coefficient of static friction is always higher ...
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