Question

What are the advantages of using a single fixed pulley
and a single movable pulley? Draw a diagram. What is
the MA and VR for such a system?

Answer 1

Answer:

A single fixed pulley, like the one in Figure 1(a), has an ideal mechanical advantage of 1 since the effort force (120 N) is equal to the load force (120 N). However, in the single movable pulley (Figure 1(b)), half of the load is supported by the rope attached to the ceiling.

Explanation:

for diagram see the above attachment

Answer 2

Question:

What are the advantages of using a single fixed pulley

and a single movable pulley? Draw a diagram. What is

the MA and VR for such a system?

Answer and explanation:

Advantages of using a single fixed pulley-

The advantage of a single fixed pulley is 1 to 1. Which means that force required to moving the object is equal to the weight of the object.

Simply fixed pulley  makes taks easier.

Advantages of using a single movable pulley-

In fixed movable pulley you don't have to put much force for the work which will be done but the work which will be done is comparatively high. Simply required force is comparatively less but which force wiil be applied to the system would be high.

In equilibrium L=T+T=2T

E=T

Mechanical advantage-

Load/Effort= 2T/T=2

Diagram and VR attached.

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