Question

The mechanical advantage of the pully is independent of the number of pulleys. true ya false​

Answer 1

Answer:

Mechanical Advantage

and Pulleys

Pulley systems are an important part of many machines. In this

Investigation, you will be testing factors that might infl uence the

actual mechanical advantage of pulley systems.

A single fi xed pulley, like the one in Figure 1(a), has an ideal

mechanical advantage of 1 since the eff ort 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. Th e other half is supported by the free end of the rope,

where the eff ort force is applied. Th erefore, the eff ort force needed

to move the load is only one-half the load force, or 60 N. Th e

mechanical advantage of this pulley is 2. A simple way to determine

the ideal mechanical advantage to a pulley system is to count the

number of lengths of rope between pulleys that support the load.

In Figure 1(a), only one segment of rope supports the load.

Th erefore, the mechanical advantage is 1. In Figure 1(b), two

segments of rope support the load, so the mechanical advantage is 2.

Explanation:

Answer 2

Answer:

false

Explanation:

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