A man lifts 20 bricks,each of weight 6N.What other information is needed to calculate the useful work done in lifting the bricks?
A.the distance he lifts the bricks
B.the mass of the bricks
C.the time taken to lift the bricks
D.the volume of the bricks

Question

A man lifts 20 bricks,each of weight 6N.What other information is needed to calculate the useful work done in lifting the bricks?
A.the distance he lifts the bricks
B.the mass of the bricks
C.the time taken to lift the bricks
D.the volume of the bricks

anonymous · Answer

The distance he lifts the bricks.

crystal99 · Answer

Thank you for the answer.

anonymous · Answer

Your welcome. Happy to help :)

anonymous · Answer

how did u do this ..pls explain

anonymous · Answer

ok...thnx..silly me

anonymous · Answer

$$Work = Force \times Displacement \times \cos \theta$$

crystal99 · Answer

Happy to know there are cool people here..:)