Created by StemPy LabA body is thrown straight up from the surface of the Earth, of radius , with a speed equal to half the escape speed. Ignoring air resistance, it rises to a height above the surface of
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← A thin uniform ring has mass M and radius R. Its moment of inertia about a tangent lying in the plane of the ring, and its radius of gyration about that line, areIn a hydraulic lift, the small piston has an area of 5 cm² and the large piston an area of 500 cm². A car of mass 1000 kg sits on the large piston, as shown in the figure. Taking g = 10 m/s², the force needed on the small piston to hold the car up, and how far that piston must move to raise the car by 1 cm, are →
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