Harmonic acceleration!!!

Classical Mechanics Level 3

A train stopping at 2 stations 4 km apart takes 4 min on the journey from one of the station to the other.Assuming it first accelerates with uniform acceleration x and then that of uniform retardation y. Find the value of 1 x + 1 y \frac{1}{x} \quad + \quad \frac{1}{y} .

Give your answer in m i n 2 min^{2} . k m − 1 km^{-1}


The answer is 2.

Rajdeep Dhingra by Rajdeep Dhingra , 20, India

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1 solution

Rajdeep Dhingra
Jan 22, 2015

graph graph In the graph area is the displacement We no that the length VJ is mag of the max vel. Using it we can find 1/x + 1/y If any problem Don't hesitate to comment

1 Helpful 0 Interesting 0 Brilliant 1 Confused

Do you think that your Solution is a Complete and Precise Solution?

Because it could be Explained much more Easily .

Muhammad Arifur Rahman - 6 years, 4 months ago

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Please tell me the more easy way of doing this

Rajdeep Dhingra - 6 years, 4 months ago

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Ok, I'll make the Solution ready in a few hours, hopefully.

Muhammad Arifur Rahman - 6 years, 4 months ago

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