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A mass m1 on a horizontal shelf is attached by a thin string that passes over a frictionless pulley to a 2.5 kilogram mass (m2) that hangs over the side of the shelf 1.5 meter above the ground. The system is released from rest at t = 0 and the 2.5 kilogram mass strikes the ground at t = 0.71 second. The system is now located in its initial position and a 1.2 kilogram mass is located on top of the block of mass m1. Released from rest, the 2.5 kilogram mass now strikes the ground 1.3 seconds later.
(a) Compute the mass m1.
(b) Find the coefficient of kinetic friction between m1 and the shelf.
Find out the magnitude of the force exerted by the right pillar while a 90.0 diver stands at the far end of the board.
In a television set, the power needed to operate the picture tube comes from the secondary of a transformer. Determine the secondary voltage
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You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state building. Before the state legislature votes on funding for the project.
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In an early test of sound propagation through the ocean, an underwater explosion of 1 pound of dynamite in the Bahamas was detected 3200 away on the coast of Africa
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 3.40 x 105 N. What is the work done on the jet by the catapult
A 51.0 kg cheerleader uses an oil-filled hydraulic lift to hold four 120 kg football players at a height of 1.00m, what is the diameter of the football players' piston
A 0.655kg stone is moving in a vertical circular path attached to a string that is 68.0cm long. The stone is moving around the path at a constant frequency of 2.35 rev/sec. Find the tension in the string at the lowest point, and the highest point.
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