Physics-
General
Easy
Question
A disc is performing pure rolling on a smooth stationary surface with constant angular velocity as shown in figure. At any instant, for the lower most point of the disc.
- Velocity is v, acceleration is zero
- Veloity is zero, acceleration is zero
- Velocty is v, acceleration is
- Velocity is zero, acceleration is nonzero
- Velocity is v, acceleration is zero
- Veloity is zero, acceleration is zero
- Velocty is v, acceleration is
- Velocity is zero, acceleration is nonzero
The correct answer is: Velocity is zero, acceleration is nonzero
From figure
Vnet (for lowest point) = v – R = v – v = 0
and Acceleration = + O =
(Since linear speed is constant)
Hence
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