Home
Class 12
PHYSICS
Block A of mass 3 kg is placed on anothe...

Block A of mass 3 kg is placed on another block B of mass 5 kg placed on the smooth surface. If coefficient of friction between two blocks is `1/2` and 32 N force is applied on block B as shown in the figure, then the work done by the frictional force on block A in first two second will be (initial velocity of the system is zero and `g = 10 m/s^2`)

A

`+96 J`

B

50 J

C

`-96 J`

D

`-50 J`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

A force of 100 N is applied on a block of mass 3 kg as shown in figure. The coefficient of friction between the surface and the block is 1/4 .Then the friction force acting on the block is

A force of 100 N is applied on a block of mass 3kg as shown below. The coefficient of friction between wall and the block is 1//4 . The friction force acting on the block is :

A block of mass 4 kg is kept on a rough horizontal surface. The coefficient of static friction is 0.8. If a forace of 19 N is applied on the block parallel to the floor, then the force of friction between the block and floor is

A block A of mass 2 kg is placed over smooth block B of mass 4 kg which is placed over a smooth horizontal floor The coefficient of friction between A and B is 0.4 when a horizontal forces of magnitude 10 N is applied on A the acceleration of block of A and B are

A block of mass 2 kg is placed on the floor. The coefficient of static friction is 0.4. A force F of 3 N is applied on the block as shown in figure. The force of friction between the block and the floor is (Take g=10 m s^(-2) )

A block of mass 2 kg is placed on the floor. The coefficient of static friction it 0.4 . A force F of 2.5 N is applied on the block, as shown. calculate the force of friction between the block and the floor. (g=9.8m//s^(2)) .

A block of mass 2 kg is placed on the floor. The coefficient of static friction is 0.4. A force F of 2.5 N is applied on the block as shown in Fig. 15.4.4. The force of friction between the block and the floor is (g = 9.8 m//s^(2))

A block of mass 1 kg lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is 0.6. If the acceleration of the truck is 5m//s^2 , the frictional force acting on the block is…………newtons.

A block of mass 1 kg lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is 0.6. If the acceleration of the truck is 5m//s^2 , the frictional force acting on the block is…………newtons.

Block A of mass 1 kg is placed on the rough surface of block B of mass 3 kg . Block B is placed on smooth horizontal surface. Blocks are given the velocities as shown. Find net work done by the frictional force. [in (-) ve J ]. .