what should be the angle between force and displacement to get the minimum work?
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Work = F•s
= Fs*cos(theta)
For minimum work cos(theta) = -1
=> theta = cos^-1 (-1)
=> theta = 180°
= Fs*cos(theta)
For minimum work cos(theta) = -1
=> theta = cos^-1 (-1)
=> theta = 180°
sarkar5:
which answer will be right 180 and 90
180
at 90 W = 0
but at 180 W= -Fs
since -Fs is -ve, so its less than zero
so 180 is ryt
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there will be angle
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