Physics Past Questions and Answers

The period of a simple pendulum of length 80.0cm was found to have doubled when the length of the pendulum was increased by X. Calculate X.

A body of mass 5kg movimg with a velocity of 30ms^-1 due east is suddenly hit by another body and changes its velocity to 50ms^-1 in the same direction. Calculate the magnitude of the impulse received.

Electric energy is measured in

A stone of mass 0.5kg is dropped from a height of 12m. Calculate its maximum kinetic energy. [g = 10ms^-1]

A machine of efficiency 80% is used to lift a box. If the effort applied by the machine is twice the weight of the box. Calculate the velocity ratio of the machine