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?

A box with mass M = 13 kg sits on a flat surface and is attached by a massless rope hung over an ideal pulley to another box that is hanging vertically with mass m = 5.0 kg.  If the coefficient of kinetic friction between the box and the surface is 0.22, what is the acceleration of the hanging mass?

An 80 kg log is sliding along a flat section of ground at constant velocity with a coefficient of kinetic friction of 0.33. A truck is dragging the log by using a cable that runs from a winch on the truck to the end of the log. The cable pulls at an angle of 30 degrees above the horizontal. What is the tension of the cable?

A flatbed truck is carrying a 30-kg crate up a sloping road at a constant speed. The coefficient of static friction between the crate and the bed is 0.60, and the coefficient of kinetic friction is 0.25. What is the maximum angle of the slope that the truck can climb if the crate is to stay in place? Answer in degrees.

A wracking ball is suspended below two cables each at an angle with the horizontal. The left cable has tension T1 and angle 42 degrees with the horizontal. The right cable has tension T2 and angle 27 degrees with the horizontal. The Wracking ball has mass 160 kg. Find the magnitude of tension T1.

You are pushing a rubber crate against a concrete floor. The two surfaces have a static coefficient of friction of 0.61 and a kinetic coefficient of friction of 0.49. The floor is horizontal, and the crate has a mass of 25.0 kg, and is initially at rest. You are pushing with a horizontal force of 100 N. What is the magnitude of the force of friction in this case? Give your answer in units of N, to three significant figures.

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 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 is placed on a wooden plank, which is initially horizontal.  One end of the plank is slowly raised to make it more and more inclined, and for a while the block stays in place on the plank and doesn't slide due to static friction.  Finally, when the plank reaches an incline of 56.3oabove horizontal, the block begins to slide.  What is the  coefficient of static friction between the block and the plank?

You are pushing a wooden crate against a rubber floor. The two surfaces have a static coefficient of friction of 0.45 and a kinetic coefficient of friction of 0.38. The floor is horizontal, and the crate has a mass of 25.0 kg, and is initially at rest. You are pushing with a horizontal force of 155 N. What is the magnitude of the force of friction in this case? Give your answer in units of N, to three significant figures.