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Standard VI

Physics

The Simple Pulley

The given fig...

Question

The given figure shows a uniform meter rule of weight W supported on a fulcrum at the 50 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 = 60 cm - 50 cm = 10 cm

Effort arm = 90 cm - 60 cm = 30 cm

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

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The given figure shows a uniform meter rule of weight W supported on a fulcrum at the 50 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 = 60 cm - 50 cm = 10 cm Effort arm = 90 cm - 60 cm = 30 cm MA of the lever =Effort armLoad arm =30 cm10 cm = 3

The given figure shows a uniform meter rule of weight W supported on a fulcrum at the 50 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 = 60 cm - 50 cm = 10 cm

Effort arm = 90 cm - 60 cm = 30 cm

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