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Standard X

Physics

Mechanical Advantage in Lever

The given fig...

Question

The given figure shows a uniform metre rule of weight W supported on a fulcrum at the 60 cm mark by applying the effort E at the 90 cm mark.

Find the mechanical advantage of the lever.

$\frac{2}{3}$

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$\frac{1}{3}$

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Solution

The correct option is C
3

Load arm = 10 cm

Effort arm = 30 cm

MA of a lever $= \frac{E f f o r t a r m}{L o a d a r m}$ = $\frac{30}{10}$ = 3

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The given figure shows a uniform metre rule of weight W supported on a fulcrum at the 60 cm mark by applying the effort E at the 90 cm mark. Find the mechanical advantage of the lever.

The correct option is C 3 Load arm = 10 cm Effort arm = 30 cm MA of a lever =Effort armLoad arm =3010 = 3

The given figure shows a uniform metre rule of weight W supported on a fulcrum at the 60 cm mark by applying the effort E at the 90 cm mark.

Find the mechanical advantage of the lever.

The correct option is C
3

Load arm = 10 cm

Effort arm = 30 cm

MA of a lever $= \frac{E f f o r t a r m}{L o a d a r m}$ = $\frac{30}{10}$ = 3