The frictional torque for square thread at the mean radius r while rai – McqOptions

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1.	The frictional torque for square thread at the mean radius r while raising load W is given by
A.	T = W.rtan(‚âà√≠¬¨¬± ‚Äö√Ñ√∂‚àö√ë‚àö¬® ‚Äö√Ñ¬∂‚Äö√†√®)
B.	T = W.rtan(‚âà√≠¬¨¬± + ‚Äö√Ñ¬∂‚Äö√†√®)
C.	T = W.rtan‚âà√≠¬¨¬±
D.	T = W.rtan‚Äö√Ñ¬∂‚Äö√†√®
Answer» C. T = W.rtan‚âà√≠¬¨¬±

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