Question

A pendulum makes 50 complete swings in 2 min and 40 sec
how much it takes to take one complete swing

Answer 1

Answer:

A pendulum makes 50 complete swing in 2 min 40 sec ...means 120 + 40 = 160 seconds

now using unitary method

a pendulum makes 1 complete swing in 160/50 = 16/5 =3.2 seconds

HOPE IT WILL HELPS

Rivu Dey Sarkar

Answer 2

Answer:

3.2 seconds

Explanation:

Time = 2 min 40 sec = 2(60) + 40 = 120 + 40 = 160 sec

50 complete swings are made in 160 sec

So, 1 complete swing takes = $\frac{160}{50} \ seconds$

Time = 3.2 seconds

Hope it helps

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