Find the angular speed after the grindstone
A constant torque of 22.0 N·m is applied to a grindstone whose moment of inertia is 0.130 kg·m2. Using energy principles, and neglecting friction, find the angular speed after the grindstone has made 17.5 revolutions.
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Compute the potential energy stored in the bow, if the arrow of mass 4.75 10-2 kg leaves the bow with a speed of 20.0 m/s. Assume that mechanical energy is conserved.
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What is the least amount of time it takes for the bob to swing from a position of maximum displacement to the equilibrium position of the pendulum?
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