A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined at θ= sin⁻¹(1/50) to the horizontal when the engine is working at 8 x 10⁵ W.The resistance to motion of train is

Options

(a) 400 N
(b) 200 N
(c) 600 N
(d) 800 N

Correct Answer:

800 N

Explanation:

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