Skidding Of Object On A Rotating Platform MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET
Quick Facts
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2 Questions around this concept.
Solve by difficulty
MEDIUMA block of mass $m$ is placed on a rotating platform at a distance r from the axis of rotation. What should be the maximum angular velocity to avoid skidding of the block [ take $\mu=$ the coefficient between the block and rotating platform]
A block of mass m is kept on the edge of the horizontal turn table of radius R
Turn table is rotating with constant angular velocity w . coefficient of friction is . If the block is
just about to move find angular velocity w of the turn table
Concepts Covered - 1
Skidding of object on a Rotating Platform
Centrifugal farce $\leq$ Force of friction
$$
m \omega^2 r \leq \mu m g
$$
$\therefore \omega_{\max }=\sqrt{(\mu \mathrm{g} / r)}=\mathrm{It}$ is the maximum velocity of ratation of the platform, so that object will not skid on it.
$\omega=$ Angular velocity
$\mathrm{r}=$ radius
$\mu=$ coefficient of friction
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