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A massless spring with spring constant 9.60 N/m hangs vertically. A body of mass 2.70 kg is attached to its free end and then released. Assume that the spring was unstretched before the body was released. Calculate how far the body descends before stopping using conservation of energy.
a) Calculate the frequency.
b) Calculate the amplitude of the motion.
An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.230rev/s . The magnitude of the angular acceleration is 0.893rev/s^2 . Both the the angular velocity and angular accleration are directed clockw..
A juggler throws a ball from height of 0.950 m with a vertical velocity of +3.75 m/s and misses it on the way down. What is its velocity when it hits the ground
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