How much work (in j) must be done to lift a stack of bricks, which has a mass of 400 kg, from the ground to a height of 3 m? (g

Question

Y_Kistochka [10]

3 years ago

13

How much work (in j) must be done to lift a stack of bricks, which has a mass of 400 kg, from the ground to a height of 3 m? (g

= 10 m/s2)?

Physics

1 answer:

svetoff [14.1K] · Answer 1 · 2021-12-31T09:51:33+03:00

svetoff [14.1K]3 years ago

6 0

Given: Mass m = 400 Kg; Height h = 3 m; g = 10 m/s²

Required: Work = ?

Formula: Work = Force x distance F = ma a = g F = mg

W = fd

W = mgh

W = (400 Kg)(10 m/s²)( 3 m)

W = 12,000 Kg.m²/s²

W = 12,000 J