A 35 kg crate is at rest on the floor. A man attempts to push it across the floor by applying a 100 N force horizontally.

1. Take the coefficient of static friction between the crate and floor to be 0.37. Calculate the Fricitonal forces between the crate and the floor.
2. Is the man’s 100 N applied force enough to get the crate to move?
3. If a second man applies a horizontal, what minimum force, in addition to the 100 N force of the first man, must he exert to get the crate started?

Three identical balls are placed on a frictionless horizontal surface touching each other. They stick to each other because of adhesive. Another ball of same radius and mass m is placed over the void created by the three balls. Find the forces applied by the balls kept on the floor to each other if the system remains in equilibrium.

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

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