1.

Classify these object into the leaves of first, second and third order – a pair of tongs, crowbar, hand pump, nutcracker a pair of scissors, a common balance to hold a weight in hand, single wheeled barrow and pincer.

Answer»

Lever of first order – crowbar, a pair of scissors, a comman balance, hand pump pincer, lever of second order – nutcracker, single wheeled barrow. Lever of third order pair of tongs to hold a weight in hand.



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