Q: In a screw jack, the effort required to lift the load is given by: (where W = Load lifted, α = Helix angle and = φ Angle of friction) स्क्रू जैक में, भार उठाने के लिए आवश्यक आयास (effort) को किस सूत्र द्वारा प्रदर्शित किया जाता है? (जहां W = उठाया गया भार, α = हेलिक्स कोण और =φ घर्षण कोण)
A.
B.
C.
D.
Correct Answer:
Option C -
Explanations:
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