FrictionMedium
Question
Car is accelerating with acceleration = 20 m/s2. A box of mass m = 10 kg that is placed inside the car, it is put in contact with the vertical wall of car as shown. The friction coefficient between the box and the wall is m = 0.6.
Options
A.The acceleration of the box will be 20 m/sec2
B.The friction force acting on the box will be 100 N
C.The contact force between the vertical wall and the box will be 100 √5 N
D.The net contact force between the vertical wall and the box is only of electromagnetic in nature.
Solution
The breaking force is insufficient, so the block will not slide.
So friction force = 100 N
and acceleration will be 20 m/sec2 only
Net contact force on the block =
All mechanical interactions are electromagnetic at microscopic level.
So friction force = 100 N
and acceleration will be 20 m/sec2 only
Net contact force on the block =
All mechanical interactions are electromagnetic at microscopic level.
Create a free account to view solution
View Solution FreeMore Friction Questions
The block shown in figure remains at rest undisturbed. A man wishes to start the block by the rope. Given the ramp angle...A body is pulled along a rough horizontal surface with a velocity 6 m/s if the body comes to rest after travelling 9m, t...A contact force exerted by one body on horizontal surface is equal to the normal force (≠ 0) between them. It can ...A uniform metal chain is placed on a rough table such that one end of chain hangs down over the edge of the table. When ...In the arrangement shown, horizontal surface is smooth, but friction is present between the block and the surface of the...