Question

Calculate speed in si units if an object moves in a circular path of radius 5 km and completes a revolution in 2 minutes.

Answer 1

Answer:

$v = \frac{250}{3} \pi = 261.799 \: m {s}^{ - 1}$

Step-by-step explanation:

We know,

$v = w \times r$

here, r = 5 km = 5000m

and, Time period, T = 2min = 120sec

Rotational speed,

$w = \frac{2\pi}{t} \\ = \frac{2\pi}{120}$

Then,

$v = wr \\ = \frac{2\pi}{120} \times 5000 \\ = \frac{250\pi}{3}$

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