A man is pushing a cart down a slope. Suddenly the cart starts moving faster and he wants to slow it down. What force should he apply to balance the cart?
A
Elecrostatic force
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B
Muscular force
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C
Magnetic force
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D
Gravitational force
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Solution
The correct option is B Muscular force The man should apply a muscular force opposite to the motion of the cart. Hence, he should apply a force to pull the cart up the slope which would balance out the gravitational force pulling it downwards.