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The minimum force required to slide a body of weight W on a rough horizontal plane is

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+1 vote
in Machine Kinematics by (38.0k points)
The minimum force required to slide a body of weight W on a rough horizontal plane is

(a) W sinϴ

(b) W cosϴ

(c) W tanϴ

(d) W cosecϴ

I got this question during an interview.

My doubt is from Friction in Journal Bearing- Friction Circle in division Friction of Machine Kinematics

1 Answer

0 votes
by (106k points)
The correct choice is (a) W sinϴ

The explanation is: The minimum force required to slide a body of weight W on a rough horizontal plane is W sinϴ. 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 P = W (sinα + μ cosα).

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