The 400-lb cylinder at A is hoisted using the motor and the pulley system shown. If the speed of point B on the cable is increased at a constant rate from zero to vg = 10 ft/s in t = 5 s, determine the tension in the cable at B to cause the motion. B VA
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- A speedboat with a mass of 545 kg545 kg (including the driver) is tethered to a fixed buoy by a strong 32.7 m32.7 m cable. The boat's owner loves high speed, but does not really want to go anywhere. So the owner revs up the boat's engine, makes a lot of noise, and runs the boat in circles around the buoy with the cable supplying all the necessary centripetal force. When the tension of the cable is steady at 13700 N,13700 N, with what force is the boat's engine pushing the boat? Different physics textbooks treat drag force somewhat differently and use different formulas. For the present purpose, take the water's drag force on the boat to be (450 kg/m)×?2,(450 kg/m)×v2, where ?v denotes the boat's speed. Ignore any drag force on the cable.A speedboat with a mass of 505 kg (including the driver) is tethered to a fixed buoy by a strong 29.7 m cable. The boat's owner loves high speed, but does not really want to go anywhere. So the owner revs up the boat's engine, makes a lot of noise, and runs the boat in circles around the buoy with the cable supplying all the necessary centripetal force. When the tension of the cable is steady at 12300 N, with what force is the boat's engine pushing the boat? Different physics textbooks treat drag force somewhat differently and use different formulas. For the present purpose, take the water's drag force on the boat to be (450 kg/m) × v², where v denotes the boat's speed. Ignore any drag force on the cable. force: N & TOOLS x10A 0.013 kg rubber stopper attached to a 0.93 m string is swung in a circle. If the tension in the string is 0.35 N, what is the period of the stopper's rev.?
- A student is swinging a ball of mass 0.323 kg in a vertical circle at constant speed, as shown in the figure below. (g indicates the direction of the acceleration due to gravity: directly downward.) The length of the string is 0.76 m. She measures the tension and finds that it is 5.601 times larger at the bottom of the circle than at the top. What is the speed of the swinging mass?A robe can hold a maximum F₁ = 100M. On a frictionless horizontal surface, a 0.75kg object attached to the This object goes rope. around a circle with 1.5m radius. lalhat is the Vmax the object can have ? 7 e it canA 200 kg mass hangs from a 300 m cable on Mars (g=3.71 m/s2). It is displaced left from equilibrium along an arc with length 30 m and released at t = 0. What is its position relative to equilibrium when t = 20 s? What is its acceleration?
- Please answer in 30 min. I will upvote.What tension must a 43.1 cm length of string support in order to whirl an attached 1,000.0 g stone in a circular path at 3.20 m/s? F=A 0.900 kg rock is tied to a string and whirled in a vertical circle with a 0.85 m radius and a frequency of rotation of 1.6 Hz. Assuming a constant velocity, determine the tension in the rope at the bottom of the circle. Round up your answer to the correct number of significant digits.
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