A pair of scissors has its blades 15 cm long, while its handles are 7.5 cm long. What is its mechanical advantage?

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0.5

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0.75

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Solution

The correct option is C
0.5

Length of blade = 15 cm = Load arm
Length of handles = 7.5 cm = Effort arm

Mechanical advantage of scissor = $\frac{E f f o r t a r m}{L o a d a r m}$
= $\frac{7.5}{15} = \frac{1}{2} = 0.5$

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A pair of scissors has its blades 15 cm long, while its handles are 7.5 cm long. What is its mechanical advantage?

The correct option is C 0.5 Length of blade = 15 cm = Load arm Length of handles = 7.5 cm = Effort arm Mechanical advantage of scissor = Effort armLoad arm = 7.515=12=0.5

The correct option is C
0.5

Length of blade = 15 cm = Load arm
Length of handles = 7.5 cm = Effort arm

Mechanical advantage of scissor = $\frac{E f f o r t a r m}{L o a d a r m}$
= $\frac{7.5}{15} = \frac{1}{2} = 0.5$