State two conditions under which work is said to have been done
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Work is done by applying force on the object to move it.
Work is done when the force should be applied and not be zero.
Work is done when the force should be applied and not be zero.
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Work done is defined as product of force and displacement.
In others words, work is said to be donw when:
1)There must be force and it should cause displacement
2)The force and satnce the object travels must be in the same direction.
The work is not said to done when angle between force and displacement is 90° because
W = Fscos∅
If ∅=90°
then cos90=0
So no work is done
In others words, work is said to be donw when:
1)There must be force and it should cause displacement
2)The force and satnce the object travels must be in the same direction.
The work is not said to done when angle between force and displacement is 90° because
W = Fscos∅
If ∅=90°
then cos90=0
So no work is done
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