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Q. A block of mass = 2.1 kg is attached to a string that is wrapped around the circumference of a wheel of radius = 8.0 cm. The wheel rotates freely about its axis and the string wraps around its circumference without slipping. At first the wheel rotates with an angular speed, causing the block to rise with a linear speed = 0.26 m/s.
Find out the moment of inertia of the wheel if the block rises to a height of = 7.70 cm before momentarily coming to rest.
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A child's toy consists of a piece of plastic attached to a spring. The spring is compressed against the floor a distance of 1.2 cm, and the toy is released. If the spring constant is 103 N/m, what is the magnitude of the spring force acting on the..
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