Question

A potato-shaped rock of specific density 2.75 and volume 10.0 liters is suspended from the ceiling of an elevator by a light cord and is fully immersed in a bucket of water resting on elevator's floor. How much is the tensin in the cord when an elevator is moving with the acceleration 3.30 m/s^2 up? What about with the acceleration 4.9 m/s^2 down? What about with the acceleration 9.8 m/s^2 down? And finally, what about with a constant speed of 9.8 m/s down.

Answer 1