mechanical forces are necessarily involved. With the exception of a stationary object in a weightless environment, there are few examples of a mechanical structure, which does not sustain any force.

A firm handshake between proteins on immune cells is important for the body's ability to fight infection. Meanwhile, a weak ...

The size of the force or motion affects the output. In the example of a push bike: input - the force applied to the pedals by the cyclist’s feet process - the chain turns the gear system ...