Question

A box has a mass of 5.8 kg is
lifted from the garage floor and
placed on a shelf. If the box
gains 145 J of potential energy,
how high is the shelf?
O A. 25 m
O B. 2.5 m
O C.5.2 m
O D. 52 m​

Answer 1

Answer:

If h be the required height , the potential energy PE=mgh

or h=PE/mg=

5.8×10

145=2.5m