Physics, asked by nehathakurathi871, 8 hours ago

the length of second hand needle of a watch is 10 cm. calculate the average speed of a needle.
hint-distance
upon
time.
speed=2πr
upon
60×10​

Answers

Answered by cherry33361
0

Answer:

Sorry I don't know answer

Answered by devindersaroha43
1

Answer:

Explanation:

We know,

Speed = Distance / Time

Here distance will be the circumference of the circle that second-hand makes in one complete revolution. Therefore, Distance = 2 * pi * r (circumference)

r (radius) = 10 cm (length of second hand)

Distance = 2 * 3.14 * 10 cm

Distance = 62.8 cm

Now, the time it takes to complete one full revolution by second hand = 60 seconds

Speed = 62.8 cm / 60 seconds

Speed = 1.0466 cm/second

Therefore, Speed of the tip of 10 cm long second hand of a clock is 1.0466 cm/second .

I hope this helps.

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