Name a machine which is used to change the direction of effort in a convenient direction.

Single fixed pulley

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Wheel

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Wedge

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Single movable Pulley

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Solution

The correct option is A Single fixed pulley
A pulley which has its axis of rotation unchanged, is called a fixed pulley.

A fixed pulley allows us to pull the rope in the downward direction and pulling in downward direction is a convenient direction as the person can use his own weight as an effort. So the fixed pulley is used to change the direction of application of effort in the downward dorection.

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Similar questions

A movable pulley is used as :

(a) a force multiplier

(b) a speed multiplier

(d) an energy multiplier

A single fixed pulley is used because it :

(a) ha sthe mechanical advantage greater than 1

(b) has the velocity ratio less than 1

(d) helps to apply the effort in a convenient direction.

Name a machine for each of the following use :

(a) to multiply the force,

(b) to change the point of application of force,

(d) to obtain the gain in speed.

(VR) :

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