A time varying for `F=10 sqrt(2) t` starts acting on the 3 kg block lept on a rough horizontal surface `(mu=0.2)` at `t=0`. Find
(a) the moment of time when the blocks leaves the surface
the moment of time when the horizontal motion begins.

A block is sliding on a rough horizontal surface. If the contact force on the block is sqrt2 times the frictional force, the coefficient of friction is

A block is sliding on a rough horizontal surface. If the contact force on the block is sqrt2 times the frictional force, the coefficient of friction is

A block is kept on a rough horizontal surface as shown. Its mass is 2 kg and coefficient of friction between block and surface (mu)=0.5. A horizontal force F is acting on the block. When

A block is kept on a rough horizontal surface as shown. Its mass is 2 kg and coefficient of friction between block and surface (mu)=0.5. A horizontal force F is acting on the block. When

A block is kept on a rough horizontal surface as shown. Its mass is 2 kg and coefficient of friction between block and surface (mu)=0.5. A horizontal force F is acting on the block. When

A time varying force F = 5t is applied on a block kept on a rough horizontal surface. Mass of block is 10 kg, coefficient of static and kinetic friction between block and horizontal surface are 0.3 and 0.2 respectively. Take g = 10 m//s^(2) Find the time at which slipping starts between block and the surface beneath it.

A time varying force F = 5t is applied on a block kept on a rough horizontal surface. Mass of block is 10 kg, coefficient of static and kinetic friction between block and horizontal surface are 0.3 and 0.2 respectively. Take g = 10 m//s^(2) Find the time at which slipping starts between block and the surface beneath it.

A block of mass 70kg is kept on a rough horizontal surface (mu=0.4) . A person is trying to pull the block by applying a horizontal force, but the block is not moving. The net contact force exerted by the surface on the block is F , then: