Question

14. Arrive at an expression for work done by a variable force.​

Answer 1

Explanation:

Δ (K.E.) = 900 Joules. Just as you can derive the work for a variable force using calculus, you can do the same for work done by a constant force. In such a calculation, pressure remains unchanged, which is why you can take it out of the equation immediately. Work = P∫ba dV.