Question

if a object moves on a circular path having diameter 10 and complete 2 round in 3 minute.Find speed of the object ​

Answer 1

here the circumference of the circle is

2πr=31.4~31.5(for easy calculation)

time taken for two round =120sec

speed of the object =

$\frac{31.5 \times 2}{180} = \frac{63}{180}$

which is approximately 0.35/sec

Answer 2

give, diameter - 10 m

radius-10/2 - 5 m

total distance covered by moving object- circumference of circle

-2*22/7*5

-44/7 *5

-220/7

-31.4 m

speed - distance/ time

31.4/180 (3*60 sec -180)

17.4m/s