Home
Class 12
PHYSICS
A man wants to slide down a block of mas...



A man wants to slide down a block of mass m which is kept on a fixed inclined plane of inclination `30^(@)` as shown in figure initially, the block is not sliding. To just start sliding the man pushes the block down the inclined with a force F. Now the block starts accelerating. To move it downwards with constant speed, the man starts pulling the block with same force. Surfaces are such that ratio of maximum static friction to kinetic friction is 2. Now, answer the following questions.
What is the value of F?

A

`(mg)/(4)`

B

`(mg)/(6)`

C

`(mg sqrt(3))/(4)`

D

`(mg)/(2sqrt(3))`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

A man wants to slide down a block of mass m which is kept on a fixed inclined plane of inclination 30^(@) as shown in the figure .Initially the block is not sliding . To just start sliding the man pushed the block down the inclined with a force F . Now , the block starts accelerating. To move it downwards with conatant speed the man starts pulling the block with same force. Surface are such that ratio of maximum static friction to kinetic friction is 2 Now, answer the following questions. What is the value of F ?

A man wants to slide down a block of mass m which is kept on a fixed inclined plane of inclination 30^(@) as shown in the figure .Initially the block is not sliding . To just start sliding the man pushed the block down the inclined with a force F . Now , the block starts accelerating. To move it downwards with conatant speed the man starts pulling the block with same force. Surface are such that ratio of maximum static friction to kinetic friction is 2 Now, answer the following questions. What is the value of mu _(s) , the coefficient of static friction?

A man wants to slide down a block of mass m which is kept on a fixed inclined plane of inclination 30^(@) as shown in figure initially, the block is not sliding. To just start sliding the man pushes the block down the inclined with a force F. Now the block starts accelerating. To move it downwards with constant speed, the man starts pulling the block with same force. Surfaces are such that ratio of maximum static friction to kinetic friction is 2. Now, answer the following questions. If man continues pushing the block by force F, its acceleration would be

A man wants to slide down a block of mass m which is kept on a fixed inclined plane of inclination 30^(@) as shown in the figure .Initially the block is not sliding . To just start sliding the man pushed the block down the inclined with a force F . Now , the block starts accelerating. To move it downwards with conatant speed the man starts pulling the block with same force. Surface are such that ratio of maximum static friction to kinetic friction is 2 Now, answer the following questions. What minimum force is required to move it up the incline with constant speed?

A man wants to slide down a block of mass m which is kept on a fixed inclined plane of inclination 30^(@) as shown in the figure .Initially the block is not sliding . To just start sliding the man pushed the block down the inclined with a force F . Now , the block starts accelerating. To move it downwards with conatant speed the man starts pulling the block with same force. Surface are such that ratio of maximum static friction to kinetic friction is 2 Now, answer the following questions. If the man wants to move the block up the inclined , what minimum force is required to start the motion?

A man wants to slide down a block of mass m which is kept on a fixed inclined plane of inclination 30^(@) as shown in the figure .Initially the block is not sliding . To just start sliding the man pushed the block down the inclined with a force F . Now , the block starts accelerating. To move it downwards with conatant speed the man starts pulling the block with same force. Surface are such that ratio of maximum static friction to kinetic friction is 2 Now, answer the following questions. If the man continues pushing the block by force F its acceleration would be

A block of mass 10 kg is kept on a fixed rough (mu=0.8) inclined plane of angle of inclination 30^(@) . The frictional force acting on the block is

A block of mass m slides down a rough inclined plane with an acceleration g/2

A block of mass m moves with constant speed down the inclined plane of inclination theta . Find the coefficient of kinetic friction.

A horizontal force F is applied to a block of mass m on a smooth fixed inclined plane of inclination theta to the horizontal as shown in the figure. Resultant force on the block up the plane is: