2007-01-02 05:30:17 · 7 answers · asked by MEGHA 1 in Science & Mathematics ➔ Physics
zero work is done because W=Fd
2007-01-02 05:34:38 · answer #1 · answered by star123 3 · 0⤊ 1⤋
Work= Force x Distance, so you need to know the distance moved by the table to calculate the work. Also, if the table were completely "frictionless" (which is impossible, but supposing:) then the work done would be zero because there would be no resisting equal and opposite force so the table would keep moving forever at constant acceleration (with continuously increasing velocity).
2007-01-02 06:15:18 · answer #2 · answered by d 2 · 0⤊ 1⤋
the answer is NOT ZERO.
you ARE applying force and 'friction' is a force that applies directly opposite your force...hence directly lessening the net force you applied.
W= F*d;
no friction simply means that the whole of your force has been applied to move the body. the question arises---how far has the body moved?
this can come when either the acceleration or the mass of the body is given and for how much TIME THIS FORCE WAS APPLIED.... this INFO MUST BE GIVEN...
if it is not...then we have to find the answer taking variables
EDIT: it does not state constant acceleration,....in that CASE the ANSWER WOULD BE INFINITY.
the body will go on n on with constant SPEED not acceleration...in that case too some work should be done!
2007-01-02 06:12:05 · answer #3 · answered by catty 4 · 0⤊ 1⤋
Zero. Work is force through a distance and the body is not applying any force because of zero resistance due to lack of friction.
2007-01-02 05:37:12 · answer #4 · answered by Gene 7 · 0⤊ 1⤋
The answer is not Zero..
Work done =Force x Distance.
so you need the distance travelled by the body to find out the work done .
The work done by the frictional force on the body is Zero.
2007-01-02 20:36:42 · answer #5 · answered by Aayush 1 · 0⤊ 1⤋
in order to calculate the work done one must specify the direction of force and displacement .if the direction is not known nobody can calculate the work done
2007-01-03 02:38:15 · answer #6 · answered by nagu 1 · 0⤊ 1⤋
as work is done against some force therefore in this case work done is zero because there is no opposing force
we do work against some force
eg.. we do work against gravity(force)
2007-01-02 06:09:59 · answer #7 · answered by shirshendu 1 · 0⤊ 1⤋