Work

Things to remember

• Work is done when a force acts on an object to displace it. The SI unit of work is newton (N) or joule (J). The relationship between work, force and displacement is : Work = force x distance (W = F x D)
• If there is no motion produced in the body, the work becomes zero.
• We can do work against gravity or against friction.
• When we lift something then it is work done against gravity and when we slide something then it is work done against friction.