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 and (b) the acceleration of the crate?

A 2.5 kg block is initially at rest on a horizontal surface. A horizontal force F of magnitude 6.2 N and a vertical force P are then applied to the block. The coefficients of friction for the block and surface are ls = 0.37 and Uk = 0.22. (a) Determine the magnitude of the frictional force acting on the block if the magnitude of P is 8. N. (b) Determine the magnitude of the frictional force acting on the block if the magnitude of P is 10.0 N. N (c) Determine the magnitude of the frictional force acting on the block if the magnitude of P is 12.0 N. N Submit Answer

A 30 kg object sits on a table. The coefficient of static friction between the object and the table is 0.25. What frictional force must you overcome to make the object move?

A block with a mass of 7.15 kg is on a horizontal surface that has friction. A string is pulling horizontally on the block with a force of 30.6 N at an angle of 15.2° above horizontal. The block is movingalong the surface  at a constant speed of 4.39 m/s. What is the magnitude of the kinetic frictional force that is acting on the block?