(a) Explain (i) work: (ii) power

(b) Show that the efficiency E, the force ratio M.A. and the velocity ratio V.R. of a machine are related by the equation: E =  M.A. x 100% V.R.

(c) An inclined plane of angle 15° is used raise a load of 4500N through a height of 2m. If the plane is 75% efficient calculate:

(i) velocity ratio of the plane;

(ii) work done on the load

(d) Explain Charles' law using the Kinetic theory of matter.