Why is it easier to push a heavy block from behind than to press it on the top and push?

STATEMENT-1: It is easier to pull a heavy object than to push it on a level ground and STATEMENT-2: The magnitude of frictional force depends on the nature of the two surfaces in contact.

STATEMENT-1: It is easier to pull a heavy object than to push it on a level ground and STATEMENT-2: The magnitude fo frictional force depends on the nature of the two surfaces in contact.

Why is it easier to swim in sea water than in fresh water?

It is easier to pull a lawn roller than to push it because pulling

Two blocks A and B of mass m_A and m_B respectively are kept in contact on a frictionless table. The experimenter pushes the block A from behind so that the blocks accelerate. If the block A exerts a fore F on the block B, what is the force exerted by the experimenter on A?

It is easier to lift a heavy stone under water than in air. Explain.

Which of the following statements is incorrect? A. a cricketer moves his hands backwards while holding a catch B. A person falling from a certain height receives more on a heap of sand injuries when he falls on a cemented floor than when he falls C. It is easier to push a lawn mower than to pull it D. Mountain roads are generally made winding upwards rather than going straight up

(A) : It is easier to pull a lawn roller than to push on the same horizontal rough surface (R ) : Pulling body decreases normal reaction

"It is easier to make a body roll over a surface than to slide". Why ?

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