Question

A man can crack a nut by applying a force of 100 N on a lever of length 0.5 m. What should be the length of the lever if he wants to use a force of 75 N to crack the nut?​

Answer 1

$\LARGE{ \underline{\underline{ \pink{ \bf{Required \: answer:}}}}}$

Effort arm = ?

Effort = 75N

Load = 100N

Load arm = 0.5m = 50cm

Effort × Effort arm = Load × Load arm

Effort arm = Load arm × Load

Effort

Substituting all the values we get:

Effort arm = 100 × 50

75

Effort arm = 66.6 cm

So, to apply the force of 75N length of nut cracker should be 66.6 cm.