Distinguish between positive and negative work.
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2
when we lift an object 2 forces acts on it these are:
(I) muscular force
and
(II) gravitational force
a. positive work is done by the muscular force because the displacement is in the direction of the muscular force .
b. negative work is down by the gravitational force because displacement is in the opposite direction to which the gravitational force is acting ...
i hope it helps..
(I) muscular force
and
(II) gravitational force
a. positive work is done by the muscular force because the displacement is in the direction of the muscular force .
b. negative work is down by the gravitational force because displacement is in the opposite direction to which the gravitational force is acting ...
i hope it helps..
Answered by
5
hey!
here is your answer
positive work- When the displacement is in the direction of applied force.
in such a situation the angle between the applied force is zero
negative work- when the displacement is in opposite direction of applied force
In such a situation the angle between the applied force and displacement is 180 degree
hope it helps you
here is your answer
positive work- When the displacement is in the direction of applied force.
in such a situation the angle between the applied force is zero
negative work- when the displacement is in opposite direction of applied force
In such a situation the angle between the applied force and displacement is 180 degree
hope it helps you
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