The figure below shows a crate with a mass of m = 3.10 kg on a ramp inclined at an angle of 35.0°. The coefficient of static friction between the crate and the ramp is 0.250. Find the minimum magnitude of the force F (in N), applied to the crate in a direction perpendicular to the ramp, that will prevent the crate from sliding down the ramp. 35.0°

Six 5 N blocks are stacked vertically. The coefficient of static friction between the blocks is µs = 0.20. Determine the horizontal force that must be applied to the fifth block from the top of the stack, in order to slide it out without moving the other blocks.

A heavy sled is being pulled by two people, as shown in the figure. The coefficient of static friction between the sled and the ground is , = 0.579, and the kinetic friction coefficient is = 0.419. The combined mass of the sled and its load is m = 351 kg. The ropes are separated by an angle = 21.0. and they make an angle 0 = 30.1° with the horizontal, Assuming both ropes pull equally hard, what is the minimum rope tension required to get the sled moving? 1214.39 minimum rope tension: incorrect If this rope tension is maintained after the sled starts moving, what is the sled's acceleration? 1.56 acceleration: Attempt 1 N m/s?

A cable attached to a block of mass 10.05 kg pulls the block along a horizontal floor at a constant velocity. If the tension in the cable is 6.23 N, what is the coefficient of kinetic friction between the block and the floor?