Question

Solves the word problems –

Convert 54 km/hr. into m/s

Calculate Time-period of a simple pendulum if it takes 72 seconds to complete 24 oscillations.

A train is travelling at a speed of 100 km/hr. How long will it take to complete a journey of 500 km without stopping in between.

Ramesh takes 15 minutes to reach market from his house on this cycle. If the speed of his cycle is 4 m/s calculate the distance between his house and market?

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Answer 1

Answer:

answer of (i) = 15m/s

answer of (ii) =3 second

answer of (iii) =5 hour

answer of (iv) =3.6 km or 3600 m

Answer 2

The time taken to complete one oscillation is known as the time period of the pendulum.

Time Period = (Total time is taken)/ (Number of Oscillations)

Given: - 20 oscillations taking 32s to complete.

Therefore 1 oscillation will take = (32)/ (20) sec = 1.6 second

Therefore 1.6s is the time period of the pendulum.

I hope it will help you