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Question

A fire tongs has its arms 20 cm long. It is used to lift a coal of weight 1.5 kgf by applying an effort at a distance of 15 cm from the fulcrum. Find : (i) the mechanical advantage of the fire tongs , and (ii) the effort needed.


A

M. A = 0.45

Effort = 9 Kgf

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B

M. A = 0.45

Effort = 6 Kgf

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C

M. A = 0.45

Effort = 2 Kgf

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D

M. A = 0.75

Effort = 2 Kgf

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