What is kinetic energy of the shell

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A hollow spherical shell has mass 8.15 kg and radius 0.220 m. It is firstly at rest and then rotates about a stationary axis that lies along a diameter with the constant acceleration of 0.880 rad/s^2. What is kinetic energy of the shell after it has turned through 7.00 rev?


The force exerted by wind on the sails of a sailboat is Fsail = 325 N north. The water exerts the force of Fkeel = 235 N east. If the boat (including its crew) has a mass of 285 kg, what are magnitude and direction of its acceleration?

Reference no: EM134489


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