A crate of mass 20 kg is sliding across a wooden floor. The coefficient of kinetic friction between the crate and the floor is 0.3.
Determine the magnitude of the friction force acting on the crate.

A person pushes horizontally with a force of 220 N on a 55 kg crate to move it across a level floor. The coefficient of kinetic friction between the crate and the floor is 0.35. What is the magnitude of (a) the frictional force?

A man of mass 75 kg is pushing a heavy box on a flat floor. The coefficient of kinetic and static friction between the floor and the box is 0.20 , and the coefficient of static friction between the man's shoes and the floor is 0.80 . If the man pushes horizontally, what is the maximum values (in kg ) of the box he can move?

A man of mass 75 kg is pushing a heavy box on a flat floor. The coefficient of kinetic and static friction between the floor and the box is 0.20 , and the coefficient of static friction between the man's shoes and the floor is 0.80 . If the man pushes horizontally, what is the maximum values (in kg ) of the box he can move?

A 3.5 kg block is pushed along a horizontal floor by a force vecF of magnitude 15 N at an angle theta = 40^(@) with the horizontal (Fig. 6-33). The coefficient of kinetic friction between the block and the floor is 0.25. Calculate the magnitudes of (a) the frictional force on the block from the floor and (b) the block's acceleration.

A block of mass 2 kg is placed on the floor. The co-efficient of static friction is 0.4. The force of friction between the block and floor is