What is a lever?
20 Likes
A lever is a simple machine which in its simplest form is made up of a rod which can turn about a fixed point called the fulcrum.
Answered By
13 Likes
Can a machine have an efficiency of 100% ? Give a reason to support your answer.
'A machine is 75% efficient'. What do you understand by this statement?
What do you mean by the mechanical advantage of a lever ?
Which class of lever has the mechanical advantage always more than 1 ? Give an example.