Q196
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)
B.
P = W tan (α + φ)
AnswerC.
P = W tan (φ - α)
D.
P = W cos (α + φ)
Answer: Option B
Solution
Answer: Option B
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