machines using levers

Levers - A simple crowbar can be used to lift a heavy rock with a small effort. The crowbar is an example of a lever. The use of levers was known to the ancient Greeks, and it is reported that Archimedes once remarked "Give me a lever long..

A simple crowbar can be used to lift a heavy rock with a small effort. The crowbar is an example of a lever..

From times immemorial, man has used machines to help him in his work. Today, we are dependent on machine for almost every task. When we think of machines we always tend to think of big and complicated units with many moving parts like wheels and rollers and g..

It is a device which helps us to do the work at one point and deliver at another point with a view of accomplishing the work more easily or with a gain in speed. We use machines to multiply force or to change the direction of the force or to increase or decrease the speed etc. ..

In all the above examples, a machine either multiplies or reduces the effect of the force that is applied. A bicycle is a machine which is used to gain speed. We gain speed by exerting additional force. When we try to ride a bicycle up a steep hill, we soon realize tha..

In class III levers effort is situated between the load and the fulcrum. (shown in the figure below) ..

In this type of lever the effort and the resistance (load) are situated on either side of the fulcrum. Let us consider the lever AB which is used to overcome a load L at B by applying the effort E at A. The fulcrum of the lever is at F as shown in the figure ..

Force Work Power Energy and Machines..

A bicycle is a machine which is used to gain speed. We gain speed by exerting additional force. When we try to ride a bicycle up a steep hill, we soon realize that we gain speed by applying greater force. It is impossible to multiply both the force and gain the speed at th..

In these type of levers the load is situated between fulcrum and effort.(shown in the figure belo..