Give examples of bodies capable of doing work.

The falling weight produces positive work, acting with its weight on the support or suspension; in doing so, he can, for example, spin a wheel or lift another load. Therefore, the lifted load has the ability to do work. If the load moves at a constant speed, its weight is equal to the force of gravity acting on it, so that with a uniform movement of the load downward, the work done by the weight of the body is equal to the work of the force of gravity applied to the load. Therefore, in what follows, speaking about lifting or lowering a load, we will talk about the work of the force of gravity.

A rolling ball in billiards knocks down other balls, and they fly to the sides. When you turn off the fan, it continues to rotate for some time, creating an air flow. When trying to drown an inflated ball, when it emerges, it can perform mechanical work, for example, push the palm out of the water to the surface or simply jump up. A weight suspended at a certain height can also do work, when it falls, or when it is pushed, it can break the glass. The stretched bowstring of the bow can push out – launch an arrow, etc. They all have energy because they interact with other bodies (or parts of the body).