An object with a mass of 4 kg4kg is hanging from an axle with a radius of 5 m5m. If the wheel attached to the axle has a radius of 35 m35m, how much force is needed to raise the object?

1 Answer
Jun 28, 2018

The force is F=5.6NF=5.6N

Explanation:

www.odicis.org

The load is L=4gNL=4gN

The radius of the axle is r=5mr=5m

The radius of the wheel is R=35mR=35m

The effort is =FN=FN

The acceleration due to gravity is g=9.8ms^-2g=9.8ms2

Taking moments about the center of the axle

F*35=4g*5F35=4g5

F=(4g*5)/35=5.6NF=4g535=5.6N

The force is F=5.6NF=5.6N