Question

1) A mechanic unscrews a nut by applying a force of 120 N on a spanner of length 40 cm.
What should be the required length of the spanner in order to apply only 40 N force?

2) Give some mechanical advantages of class 2 levers
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Answer 1

$\color{</u><u>G</u><u>r</u><u>e</u><u>e</u><u>n</u><u>} here is your answer hope it helps..$