A 64.5 g bullet is fired from a rifle having a barrel 0.935 m long.

Question

A 64.5 g bullet is fired from a rifle having a barrel 0.935 m long. Assuming the origin is placed where the bullet begins to move, the force exerted on the bullet by the expanding gas is F = a + b x − c x^2 , where a = 14100 N, b = 12500 N/m, c = 27700 N/m^2 , with x in meters. Determine the work done by the gas on the bullet as the bullet travels the length of the barrel. Answer in units of J.

Answer 1