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Multiple Movable Pulley

The diagram s...

Question

The diagram shows a pulley arrangement. What is the velocity ratio of the arrangement?

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Solution

The correct option is B $2$
Velocity ratio=distance moved by effort/distance moved byVelocity
$2 T = L$
$T = L / 2 = E$
$L = 2 E$
For twice the distance moved by effort, load will move once
Velocty ratio= $2$

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The diagram alongside shows an arrangement of three pulleys A, B and C. The load is marked as L and the effort as E.

(a) Name the pulleys A, B and C.

(b) Mark in the diagram the directions of load (L) effort (E) and tension $T_{1}$ and $T_{2}$ in the two strings.

(d) Calculate the mechanical advantage and velocity ratio of the arrangement.

(e) What assumptions have you made in parts (c) and (d)?

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