In a screw jack, the effort required to lower the load W is given by

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Q. In a screw jack, the effort required to lower the load W is given by

(A)

P = W \tan (α - φ)

${\text{P}} = {\text{W}}\tan \left( {\alpha - \varphi } \right)$

(B)

P = W \tan (α + φ)

${\text{P}} = {\text{W}}\tan \left( {\alpha + \varphi } \right)$

(C)

P = W \tan (φ - α)

${\text{P}} = {\text{W}}\tan \left( {\varphi - \alpha } \right)$

(D)

P = W \cos (α + φ)

${\text{P}} = {\text{W}}\cos \left( {\alpha + \varphi } \right)$

Correct Answer - Option(C)
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Filed under category Theory Of Machine

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