1.

Explain whyit is easier to pull a lawn mover than to push it

Answer»

SOLUTION :While pulling a lawn MOVER , force is applied upwards along the HANDLE . The vertical component of this force is upwards and reduces the effective WEIGHT of the mover, Fig (a) . While pushing a lawn mover , force is applied downwards along the handle . The vertical component of this force is downwards and increases the effective weight of the mover , Fig (b) . As the effective weight is lesser in case of pulling than in case of pushing , there-fore, "pulling is easier than pushing ".


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