An object with a mass of #15 kg# is hanging from an axle with a radius of #24 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
Oct 30, 2017

Answer:

The force is #F=235.2N#

Explanation:

enter image source here

The load is #L=15gN#

The radius of the axle is #r=24m#

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=15g*24#

#F=15g*24/15=235.2N#

The force is #F=235.2N#