A heavy-duty security camera of mass 25 kg25\text{ kg}25 kg is mounted at the outer end of a horizontal steel support arm, at a distance of 3.2 m3.2\text{ m}3.2 m from the vertical support column.
Calculate the moment of the camera's weight about the connection point on the support column. Take the acceleration due to gravity, g=9.8 m s−2g = 9.8\text{ m s}^{-2}g=9.8 m s−2.
During a maintenance procedure, the camera is accidentally released and falls vertically from rest from the support arm down to a maintenance deck. The deck is located 10 m10\text{ m}10 m vertically below the support arm.
Assuming air resistance is negligible, calculate the velocity of the camera at the instant it strikes the maintenance deck. Take g=9.8 m s−2g = 9.8\text{ m s}^{-2}g=9.8 m s−2.