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

1 Answer
Jun 28, 2018

Answer:

The force is #F=5.6N#

Explanation:

www.odicis.org

The load is #L=4gN#

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

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

The effort is #=FN#

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

Taking moments about the center of the axle

#F*35=4g*5#

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

The force is #F=5.6N#