A screw jack has square threads and the lead angle of the thread is ‚âà√≠¬¨¬±. The screw jack will be self locking when the coefficient of friction (‚âà√≠¬¨‚à´) is$

Question

TuteeHUB · Accepted Answer

‚âà√≠¬¨‚à´ = sin ‚âà√≠¬¨¬±

TuteeHUB · Answer

‚âà√≠¬¨‚à´ > tan ‚âà√≠¬¨¬±

TuteeHUB · Answer

‚âà√≠¬¨‚à´ = cot ‚âà√≠¬¨¬±

TuteeHUB · Answer

‚âà√≠¬¨‚à´ = cosec ‚âà√≠¬¨¬±

1.	A screw jack has square threads and the lead angle of the thread is ‚âà√≠¬¨¬±. The screw jack will be self locking when the coefficient of friction (‚âà√≠¬¨‚à´) is$
A.	‚âà√≠¬¨‚à´ > tan ‚âà√≠¬¨¬±
B.	‚âà√≠¬¨‚à´ = sin ‚âà√≠¬¨¬±
C.	‚âà√≠¬¨‚à´ = cot ‚âà√≠¬¨¬±
D.	‚âà√≠¬¨‚à´ = cosec ‚âà√≠¬¨¬±
Answer» B. ‚âà√≠¬¨‚à´ = sin ‚âà√≠¬¨¬±

A screw jack has square threads and the lead angle of the thread is ‚âà√≠¬¨¬±. The screw jack will be self locking when the coefficient of friction (‚âà√≠¬¨‚à´) is$

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