Why it is difficult to walk on hilly area?
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Oxygen content is low
Slopes consume more energy
Slopes consume more energy
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We know that the earth attracts everything towards its centre. This is due to its force of gravity. When we get away from the earth’s surface, we have to do more work to overcome the force of gravity.
On the other hand when we come down from a height, the gravitational pull helps our movement. While going upstairs, Raju has to lift the weight of his body against the gravity and greater energy is required to do this than for walking downstairs.
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