LEVERS AND SIMPLE MACHINES - Quiz

1) How much load is lifted if an effort of 25 kg is applied to a simple machine having velocity ratio of 4 and efficiency 75%?

65 kg 70 kg 75 kg 80 kg

2) What is the name of fixed or supporting point of a lever?

Mechanical advantage Fulcrum Effort Load

3) What effort required to lift a load of 150 kg in a wheel and axle, if the velocity ratio is 2.5 and the efficiency of the machine is 75%?

70 kg 80 kg 90 kg 100 kg

4) What is the distance of the load from the fulcrum called?

Effort arm Load arm Power arm Effort

5) Which is example for first order lever?

A wheel barrow A pair of scissors Fire tongs Lime squeezer