Question

The radius of the Earth is 6400 km and it takes 24 hrs to make a complete rotation about it's axis.

Answer 1

a)What is the angular velocity of the Earth's rotation about its axis in rev s^-1

Answer 2

@Abhisar

Answer 3

\(\sf \huge \omega =\frac{v}{r}\)

Answer 4

\(\sf \huge v=\frac{2\pi r}{t}\)

Answer 5

\(\sf \huge \omega = \frac{2\pi}{t}\)

Answer 6

What's the answer ?

Answer 7

The given answer is 1.16 x 10^-5 rev s^-1

Answer 8

I'm getting 7.43 x 10^-5

Answer 9

Lol !
It's easy one...we were complicating it :D

Answer 10

Earth takes 24 hours to complete one revolution, i.e it takes 24*3600 seconds to complete its on erevolution.
So angular velocity in revolution per second will be 1/24*3600 \(\approx 1.6\times 10^{-5}rev/s\)

Answer 11

So, I don't hv to apply any formula here

Answer 12

No....and radius is just given to fool u

Answer 13

Let say the question mentions.. it takes 24 hrs to make 2 complete rotation, it'll be 2/86400

Answer 14

yes...

Answer 15

Ok.

Answer 16

Thanks @Abhisar

Answer 17

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