6) 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%?

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

8) 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%?

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

10) Which is example for first order lever?