Question
It is easier to pull a lawn roller than to push it. Why?
✓
Answer
When we pull the lawn roller, the vertical component of the applied pull acts opposite to the weight of the roller and it reduces its effective weight. On the other hand, when the lawn roller is pushed, the vertical component of the applied push adds to the weight of the roller and therefore its effective weight increases. As the effective weight is lesser, when the lawn roller is pulled, it is easier to pull the lawn roller than to push it.
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