Physics Past Questions and Answers

A wheel and axle have radil \(80 \mathrm{~cm}\) and \(10 \mathrm{~cm}\) respectively. If the efficlency of the machine is \(0.85\), and applled force of 120 Nto the wheel will raise a load of ____________

In which of the following is surface tension important?

The eye controlled the amount of light reaching the retina by adjusting the _____________

In order to remove error from parallax when taking measurements with a meter tule, the eye should be focused _____________

A load is pulled at a uniform speed along horizontal floor by a rope at 45°C to floor. If the force in the rope is 1500N, what is the frictional force on the load?