A 75.0 kg man pushes on a 500,000 ton wall for 250 s but it does not move. How much work does he do on the wall?

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A 75.0 kg man pushes on a 500,000 ton wall for 250 s but it does not move. How much work does he do on the wall?

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Answer 1 · 2018-02-09T07:22:47

No work

Explanation:

Work is equal to a force times a displacement (parallel to the force)
$W = F \cdot D$ $W=F*D$
It is energy that causes a mass to be moved.

In this situation the wall does not move, ie zero displacement, therefore he does no work on the wall.

$W = F \cdot D = F \cdot 0 = 0 J$ $W=F*D =F*0=0J$

Answer 2 · 2018-02-09T08:11:32

$0 J$ $0J$

Explanation:

Work is defined by the equation

$W = F \cdot d$ $W=F*d$

$F$ $F$ is the force in newtons

$d$ $d$ is the distance in metres

Since the wall didn't move anywhere, that means that he did no work or $0$ $0$ joules of work.

This can be a trick question because of the time given $(250 s)$ $(250s)$ , but you always have to follow with the definition of work, which is force multiplied by distance. Since the distance is not moved, then no work is done.

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A 75.0 kg man pushes on a 500,000 ton wall for 250 s but it does not move. How much work does he do on the wall?

2 Answers

Explanation:

Explanation:

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