Question

A moving company is called into a building and asked to relocate 520 bricks to a location 15 meters above the ground. If each brick is 4 kilograms, what amount of work will be needed to accomplish the task?A. 305,760 JB. 229,320 JC. 203,840 JD. 588,000 J

Answer 1

Answer: A. 305,760 J

Step-by-step explanation:

Work is defined as a force causing the movement or displacement of an object.

work=
`mass* acceleration* height`

Given: m= mass = 4 kg

g= acceleration due to gravity =
`9.80m/s^2`

h = height = 15m

Putting in the values we get,

work=
`4kg* 9.80m/s^2* 15m=588J`

`1kgm^2s^(-2)=1Joule(J)`

Now 520 bricks are to be relocated, thus work done =
`520* 588J=305760J`

Thus amount of work will be needed to accomplish the task is 305760 J.