Question

A 10-kg box sits on the floor. Approximately how high would you have to lift the boxto increase the gravitational potential energy by 350 J?3.5 m07.0m( 15 m40 m

Answer 1

In order to determine the height at wich it is necessary to lift the box, use the following formula for the potential energy:

`U=\text{mgh}`

where:

U: potential energy = 350 J

m: mass of the box = 10 kg

h: height related to the floor = ?

g: gravitational acceleration constant = 9.8 m/s^2

Solve the equation above for h and replace the values of the other parameters, as follow:

`h=(U)/(mg)=(350J)/((10kg)(9.8(m)/(s^2)))\approx3.5m`

Hence, you have to lift the box approximately 3.5m to increase the potential energy by 350J