A force of 100N moves a body through a distance of 2m in a direction perpendicular to the force.Find the work done by the force.Give a reason to support your answer.
2006-08-20 20:59:15 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The standard formular to find work done, is
Work Done = force * distance moved in direction of force.
In this case, the work done is 0 Joules. NO WORK IS DONE.
Why? Because the force is acting perpendicular to the direction of motion.
cos(90 degrees) = 0
Anyone who answers this question with 400J is wrong.
PERPENDICULAR is the key word here.
2006-08-20 21:07:38 · answer #1 · answered by ? 3 · 1⤊ 0⤋
Dude, you might be tempted to say work is force time distance, so 100 N times 2 m is 200 Joules. But this is if the force and distance are in the same direction. In this case they are not, they are perpendicular, so the work is zero.
All you have to do is look at the equations in the textbook.
2006-08-24 20:19:07 · answer #2 · answered by kemchan2 4 · 0⤊ 0⤋
no work is done as no component of the force is in the direction of the object moved. hence since work done is given by force x distance moved IN THE DIR OF THE FORCE, the ans is 0, perpendicular is de trick word here
2006-08-21 05:20:56 · answer #3 · answered by ThoughTs 2 · 0⤊ 0⤋
when the force is perpendicular how do you expect the body to move? if someone is pressing or pushing your head downwards, you wouldn't' move forwards or backwards, you'll just stand there, or else trip over.
its a basic mechanics question with no need for any calculations
2006-08-21 08:07:38 · answer #4 · answered by Ahmed 1 · 0⤊ 0⤋
W=Fs
=200N*2m
=400Joules or (N.m)
I dint know what kind of reason you are looking for, it is pretty straight forward... The equation for work is W=Fs with F the force and s the displacement.
2006-08-21 04:05:27 · answer #5 · answered by Stopwatch 2 · 0⤊ 1⤋
It's as simple as that. Give James 10 pts.
2006-08-21 04:20:18 · answer #6 · answered by An Indian guy 2 · 0⤊ 0⤋
Oh Dear, the school holidays are almost over, I have done nothing but play computer games and watch TV, I have not done my homework, panic time!
2006-08-21 04:10:23 · answer #7 · answered by Anonymous · 0⤊ 1⤋
there is no work done.
the displacement must be in the direction of force.
like what you're doing, there's no work. your teacher gave that as an assignment to push you forward but...
no matter.
you learn anyway.
2006-08-21 05:33:40 · answer #8 · answered by Jerhyn 2 · 1⤊ 0⤋
The answer is Pi!
2006-08-21 04:05:26 · answer #9 · answered by Anonymous · 0⤊ 2⤋
nope.....not doing your homework for you......
2006-08-21 04:04:34 · answer #10 · answered by sueflower 6 · 0⤊ 2⤋