Question

What is the mass of an object if it has 420 J of potential energy while suspended by a rope 48 m above the ground?

Answer 1

0.89kg

Step-by-step explanation:

PE=mgh

PE=420 m=? g=9.8m/s^2 h=48

Making m the subject of formula

`m = (pe)/(gh)`

`= (420)/(9.8 * 48)`

`= (420)/(470.4)`

m=0.89kg