Answer to Question #16082 in Mechanics | Relativity for mahi

Question #16082
it is easier to to pull a roller than to push it .why?
1
Expert's answer
2012-10-10T11:13:41-0400
When moving horizontally, friction is an issue. When you pull a heavy object towards you, your pulling tends to bring the object up off the ground, which reduces friction that in turn reduces the effort required. However, when you push a heavy object away, the object stays on the ground (you are usually pushing downwards or horizontally, and rarely upwards), maximizing friction that in turn increases the effort required.

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