Question

Calculate the mechanical advantage of a crow bar of length 360 cm if its fulcrum is situated at a distance of 60 cm from the Load.

Answer 1

Hope it helps you. I thinks its the right answer.

Answer 2

Given that,

Length of the crow bar is 360 cm

Its fulcrum is situated at a distance of 60 cm from the Load. Its load is 60 cm.

To find,

The mechanical advantage of a crow bar.

Solution,

The ratio of effort arm to the load arm is called mechanical advantage of a crowbar. In this case, effort arm is equal to 360 cm - 60 cm = 300 cm.

Mechanical advantage is therefore given by :

$m=\dfrac{300}{60}\\\\m=5$

So, the mechanical advantage of a crow bar is 5.

Learn more,

Mechanical advantage

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