Question

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Answer 1

Answer:

Ans 1 - 70

Ans2- 1.6 seconds

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Answer 2

Answer:

1a) In the question, it is given that the train covers a distance of 240km in a time interval of 4 hours. Hence, d = 240km and t = 4hours.

Substitute the values of d and t in equation (i).

v=2404=60kmh−1.

Hence, the speed of the train is 60km/h.

1b) to complete 20 oscillations, what is the time period of the pendulum? Hint: Time period of a pendulum is time taken by it to complete 1 oscillation. Hence, the time period of the pendulum is 1.6 seconds.

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