Question

A person wants to use a lever to lift a dumpster weighing 4700 N. The lever is arranged so that it is approximately horizontal and makes contact below the dumpster's center of mass at a distance of 0.40 m from the lever's pivot.

About how much torque will the dumpster exert on the lever?

a)4700 N⋅m

b)12000 N⋅m

c)750 N⋅m

d)1900 N⋅m

The person is positioned 2.70 m away from the pivot on the other side of the lever.

With what approximate force must the person push down on the lever in order to lift the dumpster?

a)1900 N

b)4700 N

c)5100 N

d)-7.0×102 N

Answer 1