with bricks has a total mass of 18.8 kg and is pulled at constant speed by a rope inclined at 19.0° above the horizontal. The sledge moves a distance of 20.5 m on a horizontal surface. The nt of kinetic friction between the sledge and surface is 0.500. a) What is the tension in the rope? b) How much work is done by the rope on the sledge? kJ (c) What is the mechanical energy lost due to friction? kJ

The overworked Amazon delivery person is driving up a steep hill with an incline of 26° when a box they forgot to secure starts sliding toward the back of the truck. The 3.5 kg box starts from rest near the drivers seat and slides 2.1 m along the floor to the rear door. The coefficient of kinetic friction between the box and the floor is 0.36. What is the work done by the weight of the box? Wmg 31.6 J What is the work done by the Normal Force? WN = 0 What is the work done by the frictional force? Wfk = 23.31 What is the net work done on the box? Wnet What is the change in kinetic energy for the box? AKE How fast is the box moving just before it hits the rear door? Vfinal = J J X J J ms

A 32-kg block is pulled along the ground for a distance of 4.9 m by a 57 N force at an angle of 21 degrees with respect to the horizontal. The coefficient of kinetic friction is 0.21. a)  Find the work done (in J) by the applied force. b)  Find the work done (in J) by the normal force exerted by the ground. c)  Find the work done (in J) by the force of gravity.

A sledge loaded with bricks has a total mass of 17.9 kg and is pulled at constant speed by a rope inclined at 19.4° above the horizontal. The sledge moves a distance of 20.4 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500.a) What is the tension in the rope?  ______N(b) How much work is done by the rope on the sledge? _____ kJ(c) What is the mechanical energy lost due to friction? _______ kJ

A 15.1-kg box is being pushed from the bottom to the top of a frictionless ramp. When the box is pushed at a constant velocity, the nonconservative pushing force does 58.0 J of work. How much work is done by the pushing force when the box starts from rest at the bottom and reaches the top of the same ramp with a speed of 1.50 m/s? Wnc = Number i Units

A 5.0 kg object has a velocity (5.Oi + 2.Oj) m/s. If its velocity changes to (6.0i - 4.0j) m/s/ what is the net external work done on the object?

For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.00 m at a constant speed in a time of 1.60 s. a.) What is the output energy, in kJ (kiloJoule)? b.) What is the metabolic energy, in kJ (kiloJoule)? c.) How much thermal energy is created in this process, in kJ (kiloJoule)?

Starting from rest, a 6.2-kg block slides 3.2 m down a rough 37-degree incline. The coefficient of kinetic friction between the block and the incline is μk = 0.55. a)  Determine the work done by the friction force between block and incline. b)  Determine the work done by the normal force. c)  Determine the net work done on the block.

A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving down at a steady speed of 5.0 m/s for 8.0 m. Use g = 10 m/s2. Match the answers with questions. he work done on the box by its weight (WW)                                                                        the work done on the box by the tension force in the cable  (WT)                                                                        the net work done on the box  (Wnet) A. 0 J B. 50 J C. 320 J D. -50 J E. -320 J

A 123.0 N carton is pulled up a frictionless baggage ramp inclined at 29.0 degrees above the horizontal by a rope exerting a 70.0 N pull parallel to the ramp's surface. The carton travels 5.00 m along the surface of the ramp. Part A: Calculate the work done on the carton by the rope. Part B: Calculate the work done on the carton by the gravity.   Part C: Calculate the work done on the carton by the normal force of the ramp.   Part D: What is the net work done on the carton?   Part E:   Suppose that the rope is angled at 48.4 degrees above the horizontal, instead of being parallel to the ramp's surface. How much work does the rope do on the carton in this case?