A $20\, kg$ block is initially at rest on a rough horizontal surface. A horizontal force of $75 \,N$ is required to set the block in motion. After it is in motion, a horizontal force of $60\, N$ is required to keep the block moving with constant speed. The coefficient of static friction is
A $20\, kg$ block is initially at rest on a rough horizontal surface. A horizontal force of $75 \,N$ is required to set the block in motion. After it is in motion, a horizontal force of $60\, N$ is required to keep the block moving with constant speed. The coefficient of static friction is
- A
$0.38$
- B
$0.44$
- C
$0.52$
- D
$0.6$
Similar Questions
The limiting value of static friction between two contact surfaces is ...........
The limiting value of static friction between two contact surfaces is ...........
The limiting friction between two bodies in contact is independent of
The limiting friction between two bodies in contact is independent of
For the given figure, if block remains in equilibrium position then find frictional force between block and wall ........ $N$
For the given figure, if block remains in equilibrium position then find frictional force between block and wall ........ $N$
A conveyor belt is moving at a constant speed of $2\, ms^{-1}$. A box is gently dropped on it. The coefficient of friction between them is $\mu = 0.5$. The distance that the box will move relative to belt before coming to rest on it, (taking $g = 10\, ms^{-2}$) is ........ $m$.
A conveyor belt is moving at a constant speed of $2\, ms^{-1}$. A box is gently dropped on it. The coefficient of friction between them is $\mu = 0.5$. The distance that the box will move relative to belt before coming to rest on it, (taking $g = 10\, ms^{-2}$) is ........ $m$.
In the given figure the acceleration of $M$ is $(g = 10 \,ms^{-2})$
In the given figure the acceleration of $M$ is $(g = 10 \,ms^{-2})$