Question

A pendulum makes 50 complete swings in 2min 40sec
What is the time period for 1 complete swing?
A. 1.6s
B. 3.2s
C. 4.8s
D. 6.4s

Answer 1

Answer:

B. 3.2s

Explanation:

50 swings = 2 mins 40 secs

=> 50 swings = 160 secs

=> 1 swing = 160 / 50 secs

=> 1 swing -= 3.2 secs

Answer 2

Given:

The number of swings a pendulum makes = $50$

The time period for $50$ complete swings = $2$ min $40$ sec

To find:

The time period for $1$ complete swing

Step-by-step Explanation:

The time period for $50$ complete swings = $2$ min $40$ sec

Let us convert $2$ min $40$ sec into seconds

⇒ $2$ min $40$ sec = $160$ seconds

The time taken for 1 complete swing = $\frac{160}{50}$ seconds

⇒ The time taken for 1 complete swing = $3.2$ seconds

Answer:

Therefore, the time period for $1$ complete swing = $3.2$ seconds