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Mechanical Engineering - Theory of machines - Discussion

Discussion Forum : Theory of machines - Section 4 (Q.No. 15)
Theory of machines
15.
A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)
P = W tan α
P = W tan (α + φ)
P = W (sin α + μ cos α)
P = W (cos α + μ sin α)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.
Vipul kumar said:   8 years ago
May be C is correct in the sense that here the effort is applied parallel to the hypotenuse face of the wedge, if said that force is applied parallel to the horizontal direction then the answer would be B.
Sagar vyavahare said:   8 years ago
Answer C is right. B is for screw jack lifting a load.
Mayur said:   8 years ago
I think the answer is B.
Manoj said:   9 years ago
Explain the solution.
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