Question

A woman draws water from a well using a fixed pulley. The mass of bucket and water together is 6 kg. The force applied by the woman is 70 N. Calculate the mechanical advantage.

Answer 1

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A woman draws water from a well using a fixed pulley. The mass of bucket and water together is 6 kg. The force applied by the woman is 70 N. Calculate the mechanical advantage.



ans...... =




Dear Student,
                     mechanical advantage=



Output force
-------------------
input force


6×9.8
---------
70

therefore 58.8
= ------- N
70



= 0.84 N answer.

Answer 2

Answer:

The mechanical advantage is 0.86

Explanation:

Formulas used in the problem:  

                              Mechanical advantage =  $\frac{Load }{ Effort} = \frac{F}{W}$.

The mechanical advantage of a system is the ratio of the force that performs work to the force applied. We assume the system has no friction.

Generally, the mechanical advantage will be less than the theoretical value by an amount determined by the amount of friction.

Given

The mass of the bucket together with water is ( m ) = 6kg

A load of bucket and water, W = 6×10 = 60N

Force applied by the women, F = 70N

Mechanical advantage = $\frac{Load }{ Effort} = \frac{F}{W}= 70 /60=0.86.$

Hence, the mechanical advantage is 0.86.

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