A horizontal force F is exerted on a 20 kg block to push it up an inclined plane having an lnclination of 30º. The frictionalforce retarding the motion is 80 N. For the acceleration of the moving block to be zero, the force F must be-

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:

A 30 kg block is to be moved up an inclined plane at an anglue 30° to the horizontal with a velocity of 5ms^(-1) . If the frictional force retarding the motion is 150N find the horizontal force required to move the block up the plane. ( g=10ms^(-2) )

A 1 kg block is being pushed against a wall by a force F=75N as shown in the figure. The coefficient of friction is 0.25. The magnitude of acceleration of the block is:

A 1 kg block is being pushed against a wall by a force F=75N as shown in the figure. The coefficient of friction is 0.25. The magnitude of acceleration of the block is:

A block of mass m is placed on a smooth inclined plane of inclination theta with the horizontal. The force exerted by the plane on the block has a magnitude

A block of mass m is placed on a smooth inclined plane of inclination theta with the horizontal. The force exerted by the plane on the block has a magnitude