Question

If the rope is used to pull an object of weight 1000N, knowing that the angle of contact of rope is
180° and the coefficient of friction is 0.1, determine the effort needed to lift the load.
130N
O
10OON
O
1369N
200N​

Answer 1

Answer:

Answer: a

Explanation: 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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2. A body will begin to move down an inclined plane, if the angle of inclination of the plane is ____________ the angle of friction.

a) equal to

b) less than

c) greater than

d) none of the mentioned

Answer 2

Answer:

the answer is 1000N

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