5. A load of 4 slugs is attached to a rope that runs over a pulley at the top of a building 100 ft. high. If a man is able to raise this load to the top of the building in 1 min, find the average power (in watt) required. 6, A 4,000 # car is at an incline that makes an angle of 15° with the horizontal. It is moving upward at constant speed 60 mph against a frictional...
A rope, attached to a weight, goes up through a pulley at the ceiling and back down to a worker. The worker holds the rope at the same height as the connection point between the rope and weight. The distance from the connection point to the ceiling is 35 ft. Suppose the worker stands directly next to the weight (i.e., a total rope length of 70 ft) and begins to walk away at a constant rate of 4 ft/s. How...
4.8 An Atwood's machine has two masses attached with a rope that runs over a pulley. The 12 kg mass accelerates downward at 3.4 m/s. a) What is the mass of the other block, mı? b) What is the tension in the rope? 3.4 m/s2
A boat is pulled into a dock by means of a rope attached to a pulley on the dock. The rope is attached to the front of the boat, which is 7 feet below the level of the pulley. If the rope is pulled through the pulley at a rate of 10 ft/min, at what rate will the boat be approaching the dock when 90 ft of rope is out? The boat will be approaching the dock at________ft/min.
Two boxes are connected to a rope, and the rope is hung over a pulley connected to the ceiling, as shown in the figure below.The masses of the boxes are m1=18.0 kg and m2=12.0 kg, the mass of the pulley is M=5.00 kg, and the radius of the pulley is R=0.300 m. Box m2 is initially on the floor, and box m1 is initially 4.70 m above the floor when it is released from rest. The pulley's axis has negligible...
(1 point) A boat is pulled into a dock by means of a rope attached to a pulley on the dock. The rope is attached to the front of the boat, which is 6 feet below the level of the pulley. If the rope is pulled through the pulley at a rate of 12 ft/min, at what rate will the boat be approaching the dock when 90 ft of rope is out? The boat will be approaching the dock at...
Two blocks are connected to a rope that passes over a pulley shaped like a disk, as shown. The pulley has a mass of 3.40 kg, a radius of 11.0 cm and is on a frictionless axle. Block A has a mass of 9.00 kg and block B has a mass of 20.0 kg. The system is released from rest when block A is 1.40 m above the floor В a) How fast is Block A moving when it has...
Two carts, A and B, are connected by a rope 39 ft long that passes over a pulley P (see the figure). The point Q is on the floor h = 12 ft directly beneath P and between the carts. Cart A is being pulled away from Q at a speed of 3 ft/s. How fast is cart B moving toward Q at the instant when cart A is 5 ft from Q? Answer should be in ft/sec.
) A 2 kg block is attached to a rope. The rope is wound around a pulley which has a radius of 0.2 m. You do not know the mass of the pulley, or the geometry of the pulley. The block is released from rest, and you notice it has a speed of 3 m/s after falling 1.5 m. a) What is the angular velocity of the pulley when the speed is 3 m/s? b) Use the fact that energy...
A 15.0 kg mass is hoisted using a rope that passes over a single frictionless pulley of negligible mass. If the mass accelerates upward with an acceleration of 1.25 m/s2, what force is being exerted on the rope. a. 175 N 6.210 N C 193 N. d. 166 N QUESTION 14 While roller skating a 60.0 kg child, distracted by his friend, accidentally runs into the back of a 40.0 kg child who is at rest. Before the collision, the...