Question

A wedge is moving rightwards on which a block of mass 10 kg is placed on it. Friction coefficient between the wedge and the block is 0.8 [take g=10 $m/s^{-1}$]. Select correct alternative(s) among the following options.

• A. If wedge is moving with constant velocity then friction acting on block is 64 N.
• B. If wedge is moving with constant velocity then acceleration of block is zero.
• C. If wedge is moving with = 2 ($\hat{i}$) $m/s^{-1}$ then friction acting on block is 44 N.
• D. If wedge is moving with = 10 ($\hat{i}$) $m/s^{-1}$ then friction is 20 N, downward on the block along the inclined.

Answer 1

Answer: (B), (C), (D)

The correct options are
B If wedge is moving with constant velocity then acceleration of block is zero.
C If wedge is moving with = 2 ($\hat{i}$) $m/s^{-1}$ then friction acting on block is 44 N.
D If wedge is moving with = 10 ($\hat{i}$) $m/s^{-1}$ then friction is 20 N, downward on the block along the inclined.