Question

Two very quick questions!!

1) If a pulley system with an actual mechanical advantage of 2 is used in lifting a 2,000 lb. car, what effort would be needed to move the car?


If a pulley system with an actual mechanical advantage of 2,000,000 is used in lifting a 2,000 lb. car, what effort would be needed to move the car?

Answer 1

do you have diagram for this question?
@Michele_Laino

can we solve this
1)
suppose T1=2T2
then how ran we proceed further?

Answer 2

I think that, in both cases, the requested force \(F\) is given by the ratio between the resistant force \(R\) and the advantage \(a\) of the elementary machine used, namely:
\(F=R/a\)