A crowbar of length $120$ cm has its fulcrum situated at a distance of $20$ cm from the load. Calculate the mechanical advantage of the crowbar.

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Solution

Mechanical Advantage, $M A = \frac{E f f o r t a r m}{L o a d a r m}$
As given, Load arm= $20 c m$
Effort arm= $120 - 20 = 100 c m$
$M A = \frac{100}{20} = 5$

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A crowbar of length 120 cm has its fulcrum situated at a distance of 20 cm from the load. Calculate the mechanical advantage of the crowbar.

Mechanical Advantage, MA=EffortarmLoadarmAs given, Load arm=20cmEffort arm=120−20=100cmMA=10020=5

A crowbar of length $120$ cm has its fulcrum situated at a distance of $20$ cm from the load. Calculate the mechanical advantage of the crowbar.

Mechanical Advantage, $M A = \frac{E f f o r t a r m}{L o a d a r m}$
As given, Load arm= $20 c m$
Effort arm= $120 - 20 = 100 c m$
$M A = \frac{100}{20} = 5$