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प्रश्न
A force acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of the force. What should be the value of θ to get the maximum positive work?
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उत्तर
`W = barF.barS = Fs cos theta`
`cos theta` maximum value 1 = FS
`:. theta = 0^@`
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