Question

In a shooting field where noone can get hurt, there is a vertical square plastic board, 0.260 mm on a side and with mass 0.790 kgkg , that rotates on a horizontal axis along its top edge. The center of the plastic board is hit by a bullet with mass 1.90 gg that is moving with 360 m/sm/s and that stays embedded in the plastic board.

a)Find the angular velocity of the plastic board right after the bullet's hit?

b)Calculate the maximum height above the equilibrium position does the center of the plastic board reach before starting to go back down again? c) Find the minimum bullet velocity which would be required for the plastic board to swing all the way over after impact?

Answer 1