Question: 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.)
[A]. P = W tan (α – φ)
P = W tan (φ – α)
[A]. P = W tan (α – φ)
[B].
P = W tan (α + φ)[C].
[D].
P = W cos (α + φ)Answer: Option B
Explanation:
No answer description available for this question.