PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Answer the following questions about work:
(a) Define work done by a constant force acting on a body.
(b) Write the mathematical expression that relates work, force and displacement, clearly stating the meaning of each symbol.
(c) State the SI unit of work.
(d) Under what condition is the work done by a force on a body zero even though the force itself is not zero?