Physics Past Questions and Answers

A uniform bar AB is balanced on a knife-edge which is 60cm from B by a mass of 22g which hangs at C 10cm from A. Calculate the mass of the bar.

A body of mass 1000kg is released from a height of 10m above the ground. Determine its kinetic energy just before it strikes the ground .[g = 10ms<sup style='font-size: smaller;'>-2</sup>]

The crackling noise produced by aluminum roofing sheets on a house during a hot sunny day is a result of

Water is unsuitable for use as a thermometric liquid because it

The diagram above illustrates a block ans tackle pulley system in which an effort E supports a load of 100.0N. If the efficiency of the machine is 75%, calculate the value of E