Question

If the mass of an object is 2500, what is the minimum force required to lift it, if the net force applied to the object is -6?

Answer 1

Answer : F = 24494 N

Explanation :

It is given that,

mass of object, $m=2500 Kg$

net force on object, $\sum F=-6\ N$

Net force is equal to the sum of forces acting on the object,

On lifting the object, two forces will act i.e. its weight and the muscular force

Let F is the minimum force required to lift the object.

$F_{net}=mg+F$

$-6=F-mg$    (since both forces are acting in opposite directions)

$-6=F-2500\ Kg\times 9.8\ m/s^2$

$F=24494\ N$

Hence, to lift the object minimum force of 24494 N is required.