Two blocks, A and B (with mass 60 kg and 130 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is 4ų = 0.24. Determine the change in the kinetic energy of block A as it moves from © to ©, a distance of 21 m up the %3D ncline (and block B drops downward a distance of 21 m) if the system starts from rest.

Two blocks, A and B (with mass 30 kg and 110 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is u, = 0.21. Determine the change in the kinetic energy of block A as it moves from to 0 a distance of 24 m up the incline (and block B drops downward a distance of 24 m) if the system starts from rest. A 37°

A block of mass m is on an inclined ramp. The ramp makes anangle θ with respect to the horizontal, as shown. The ramp hasfriction, with coefficient of kinetic friction μk and static friction μs.This experiment takes place on earth.The block has an initial speed of v up the ramp. It travels adistance d along the ramp before it stops.Answer using variables, please d) Calculate the work done by the Friction force as the block travels the distance d.Is it positive, negative, or zero?e) If the block comes to rest, how far has it travelled?Use the work-energy principle and your results of parts b), c), and d).f) Briefly (one sentence) explain why this problem could not be solved using conservation ofenergy.

A 68.3-kg skier coasts up a snow-covered hill that makes an angle of 25.5 ° with the horizontal. The initial speed of the skier is 9.77 m/s. After coasting a distance of 1.45 m up the slope, the speed of the skier is 3.60 m/s. (a) Find the work done by the kinetic frictional force that acts on the skis. (b) What is the magnitude of the kinetic frictional force? (a) Number i (b) Number i Units Units 0