An 85kg box is placed on top of a 40 inclined plane with a coefficient of kinetic friction of 0.22. The box is attached to a pulley with a hanging mass of 22kg. (a.) What is the acceleration of the system? (b.) Calculate the tension force on the rope.

A elevator accelerates upward in 3.2 s to a final speed of 7.2 m/s. Determine the apparent weight of a passenger with mass of 56 kg.

A 20kg block is placed on a 30 degree ramp and an acceleration of 4.91m/s^2 is predicted if friction between the block and ramp is ignored. The actual measured acceleration is 3.49m/s^2. Find the Coefficient of friction between the block and the ramp.

Two blocks are positioned on surfaces, each inclined at the same angle of 40.7 degrees with respect to the horizontal. The blocks are connected by a rope which rests on a frictionless pulley at the top of the inclines as shown, so the blocks can slide together. The mass of the black block is 3.70 kg, and the coefficient of kinetic friction for both blocks and inclines is 0.280. Assume static friction has been overcome and that everything can slide. What is must be the mass of the white block if both blocks are to slide to the RIGHT at an acceleration of 1.5 m/s^2?

A 4.00 kg block is sliding on a rough surface with a coefficient of static friction = 0.320 and a coefficient of kinetic friction = 0.210. The block slides to a stop. What horizontal force (in Newtons) will be required to start the block moving again?

A 260-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0 with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.870, and the log has an acceleration of 0.800 m/s2. Find the tension in the rope.

A 36.0-kg child swings in a swing supported by two chains, each 3.08 m long. The tension in each chain at the lowest point is 410 N. (a) Find the child's speed at the lowest point.(b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.)

A block with a mass of 2.0 kg is released from rest and slides down a long, smooth ramp. The incline of the ramp is 41.0 degrees, and the coefficient of kinetic friction is  ?=0.259 How far will the block travel in 1.001.00 s, assuming it does not reach the end of the ramp?

A 2.50 kg mass is released from rest while on and incline of 52 degrees. If the coefficient of kinetic friction is 0.277, what is the magnitude of the acceleration of the mass?

Two blocks are positioned on surfaces, each inclined at the same angle of 53.1 degrees with respect to the horizontal. The blocks are connected by a rope which rests on a frictionless pulley at the top of the inclines as shown, so the blocks can slide together. The mass of the black block is 3.31 kg, and the coefficient of kinetic friction for both blocks and inclines is 0.500. Assume static friction has been overcome and that everything can slide. What is must be the mass of the white block if both blocks are to slide to the LEFT at a constant velocity? 1 1.50 kg 2 7.29 kg 3 3.31 kg 4 5.30 kg