1. A pendulum has a time period of 2.5 seconds. How many oscillations does it complete in one hour?
An athlete runs 200 metres in 16 seconds. What is his average speed in Sl units?
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1. A pendulum has a time period of 2.5 seconds. How many oscillations does it complete in one hour?
An athlete runs 200 metres in 16 seconds. What is his average speed in Sl units?
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Answer:
oscillations in 5 s hence 1 oscillation in 2.5 s which is its time period
T=2π
g
l
2.5=2π
g
l
l=10×
4π
2
6.25
=1.58m
Answer:
time period - 2.5
distance- 1 h - 60 m
speed- d/t
speed - 60 / 25
speed- 2.5