Question

An elevator weighs 1500 Newtons. Calculate how much potential energy it has when it is lived 500 meters in the air.

75,000 J


750 J


7,500,000 J


750,000 J

Answer 1

An elevator has 750,000 J when it is lived 500 meters in the air

Answer: Option D

Step-by-step explanation:

The expression to find the potential energy completely on the basis of forces that on two objects. It can be written as

`potential\ energy (P . E)=m * acceleration\ due\ to\ gravity\ (g) * height (h)`

Where,

m – mass of object

Acceleration due to gravity =
`9.8 \mathrm{m} / \mathrm{s}^(2)`

h = 500 meters

Force = 1500 Newton

As we know, according to Newton second law of motion, the force can be expressed in terms of mass and gravity (F= ma). So, the potential energy can be calculated as

`P . E=F * h=1500(500)=750000 J`

Hence, an elevator has 750,000 J when it is lived 500 meters in the air.