Tag: common machines

A gear is a rotating machine part having cut teeth or cogs that mesh with another toothed part to transmit torque.

In the machines, the flow of compressed and purified air lowers the friction, hence it acts as a lubricant.

1. A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. Levers,inclined planes and pulleys are called simple machines

Graphite powder is used in some machines to reduce friction. Ball bearing coverts sliding friction into rolling friction.

The mechanical advantage increases with decrease in height of inclined plane.

The mechanical advantage of an inclined plane is given by length/height. As the height decreases, the ratio length/height increases, thus increasing the mechanical advantage.

In an ideal machine there will be zero energy loss hence output will be equal to input

A wedge is a simple machine consisting of two inclined planes joined back to back. It is used to split or cut objects by converting force applied to its blunt end into forces perpendicular to its inclined surfaces.