Mechanical Engineering - Engineering Mechanics - Discussion

Discussion Forum : Engineering Mechanics - Section 1 (Q.No. 9)
9.
A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)
P = W tanα
P = W tan(α + φ)
P = W (sinα + μcosα)
P = W (cosα + μsinα)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
21 comments Page 3 of 3.

Sagar said:   1 decade ago
Consider the free body of diagram of the block moving upwards. The force P we are applying to the right and component of weight along the inclined plane wsina to the left and frictional force uwcosa to the left. Consider the force balance we will arrive at the equation as stated at C.


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