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State the expression for work done when displacement and force makes an angle θ OR State the expression for work done when force is applied making an angle θ with the horizontal force.Force used for the displacement |
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Answer» Let ‘F’ be the applied force and Fj be its component in the direction of displacement. Let ’S’ be the displacement. The amount of work done is given by W = F1s …… (1) The force ‘F’ is applied in the direction of the string. Let ‘θ’ be the angle that the string makes with the horizontal. We can determine the component ‘F1‘, of this force F, which acts in the horizontal direction by means of trigonometry. Substituting the value of F1 in equation 1 Thus, the work done by F1 is W cos θ s ∴ W = Fscosθ |
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