An object with a mass of #4 kg# is hanging from an axle with a radius of #36 m#. If the wheel attached to the axle has a radius of #15 m#, how much force must be applied to the wheel to keep the object from falling?

1 Answer
Apr 1, 2018

The force is #=94.1N#

Explanation:

www.odicis.org

The load is #L=4gN#

The radius of the axle is #r=36m#

The radius of the wheel is #R=15m#

The effort is #=FN#

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

Taking moments about the center of the axle

#F*15=4g*36#

#F=(4g*36)/15=94.1N#

The force is #F=94.1N#