2007-07-20 17:57:26 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Physics
You are produccing some effort and spending energy. Until the wall moves the net result of work produced is zero.
W=Fx d (force time distance)
here d=0
2007-07-20 18:02:43 · answer #1 · answered by Capacitor 2 · 0⤊ 0⤋
Work is defined as a force, multiplied by the distance over which that force is exerted.
When you push on a wall, you're exerting a force. However, unless you actually move the wall, the distance the wall travels is zero. So, the work done is zero as well.
2007-07-21 01:01:07 · answer #2 · answered by lithiumdeuteride 7 · 1⤊ 0⤋
In terms of equilibrium, a variation of Newton's third law, you are doing 'work' pushing(force) at the wall just as the wall is pushing back(force) at you in an equal and opposite direction, even though the distance is zero. But given that Work=Force x distance moved, work = zero given in this equation though.
2007-07-21 01:24:11 · answer #3 · answered by no_einstein 4 · 0⤊ 0⤋
yes - you are applying a force to the building - if you were strong enough you could in theory knock down the wall - and whether you realize it or not you are deflecting the wall - the problem is the amount of force you need to apply (depending on what the wall is made of) is too great for you to see any deflection or knock down the wall
get a regular wood pencil - grab each end and bend it - (try not to break it) - you'll see the pencil bend - now imagine that the pencil is the wall and each end is the point at which it joins the ceiling and floor - you are doing work
2007-07-21 01:04:59 · answer #4 · answered by lancej0hns0n 4 · 0⤊ 1⤋
The 0 work example is a classic answer to the problem. It is correct and it seems counterintuitive but only because we think, hey I am doing work.
The thing is "you" really are doing work. Your cells are moving, absorbing, transmitting, and releasing energy so you really are doing work as your cells are fighting for you to keep pressing against the wall. But, to how the system is defined no work is applied.as nothing is moving. So it really isn't counterintuitive, you just need to keep in mind what the system is.
2007-07-21 01:14:01 · answer #5 · answered by theacev 1 · 0⤊ 0⤋
No, because the wall is not moving
2007-07-21 01:10:05 · answer #6 · answered by JAMES 4 · 0⤊ 0⤋
ur expending energy... but since the wall doesnt move and According to physics, work is force multiplied by distance. Since distance moved is zero, according to physics, work done is zero.
But then, ur expending energy no doubt. u wld stil feel tired. :)
2007-07-21 02:02:21 · answer #7 · answered by VVK 2 · 0⤊ 0⤋
i think is no...bcoz the wall did not move...
2007-07-21 01:31:25 · answer #8 · answered by chimie90 2 · 0⤊ 0⤋