An object with a mass of #2 kg# is hanging from an axle with a radius of #2 m#. If the wheel attached to the axle has a radius of #28 m#, how much force must be applied to the wheel to keep the object from falling?

Question

1331 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-01-05T18:41:13

The force is #F=1.4N#

enter image source here

The load is #L=2gN#

The radius of the axle is #r=2m#

The radius of the wheel is #R=28m#

The effort is #=FN#

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

Taking moments about the center of the axle

#F*28=2g*2#

#F=(2g*2)/28=1.4N#

The force is #F=1.4N#