Why pulling a lawn mower is easier than pushing it

Asked by admin @ 07/08/2021 in Physics viewed by 277 People

It is easier to pull a lawn mower than push it. why?

Answered by admin @ 07/08/2021

The ease with which you push or pull depends on the amount of friction acting on it.

When you pull with a force F, the vertical component of force will be upward. So the net vertical force will be less than weight of lawn mower. So the normal force will be less(N = mg - F sinФ, where Ф is the angle with which you are pulling) and hence friction will be less.

When you push with a force F, the vertical component of force will be downward. So the net vertical force will be more than weight of lawn mower. So the normal force will be more(N = mg + F sinФ, where Ф is the angle with which you are pushing) and hence friction will be more.

So pulling is easier than pushing.

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