Ashwin pulls a load up an inclined plane. What forces must Ashwin overcome to pull it up? A. Magnetic force B. Gravitational force C. Frictional force
A
B and C only
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B
A and B only
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C
C and A only
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D
A, B and C
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Solution
The correct option is A B and C only The gravitational force due to earth always exists downwards. The force opposing his relative motion along the incline is called frictional force.
Therefore, he needs to overcome gravitational and friction forces to pull the load up the incline.