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The Simple Pulley

A single fixe...

Question

A single fixed pulley is used because it :

(a) ha sthe mechanical advantage greater than 1

(b) has the velocity ratio less than 1

(c) gives $100 %$ efficiency

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

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Solution

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

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Similar questions

In a single fixed pulley, the velocity ratio is always less than the mechanical advantage.

In which direction the force must be applied, when a single pulley is used with a mechanical advantage greater than one?

Give reasons for the following :

(a) In a single fixed pulley, the velocity ratio is always more than the mechanical advantage.

(b) The efficiency of a movable pulley is always less than $100 %$ .

(c) In case of a block and tackle system, the mechanical advantage increases with the increase in the number of pulleys.

(d) The lower block of a block and tackle pulley system must be of negligible weight.

Select the incorrect statement :

(a) A machine always has the efficiency less than $100 %$ .

(b) The mechanical advantage of a machine can be less than 1.

(c) A machine can be used as a speed multiplier.

(d) A machine can have the mechanical advantage greater than the velocity ratio.

Q. In a single fixed pulley, the velocity ratio is alwaysthe mechanical advantage.

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The Simple Pulley

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