Question

Archimedes is supposed to have said, "Give me a place to stand on, and I will move the Earth." Suppose you had an object with a mass equal to that of Earth (5.98 1024 kg), and it experienced gravity equal to that at Earth's surface, so that its weight was 5.87 1025 N. If by using a lever you could move this mass with a force of 175 N, what would be the mechanical advantage of the lever?

Answer 1

Mechanical advantage is ration of two forces which shows how much greater force we can get as a result of using lever.


`MA= ( F_(a) )/(F_(b))`

We are given information:

`F_(a) = 5.87* 10^(25) N \\ F_(b) = 175N`


`MA= ( 5.87* 10^(25) N )/(175 N) \\ MA=3.4* 10^(23)`