Question

Awheel ,14 cm in diameter make 3000 Revolution per minute find it speed in metre second

Answer 1

Diameter of wheel=14 cm
1 circumference=1 Revolution

CIRCUMFERANCE=π×daimeter
π=22/7

CIRCUMFERANCE=22/7×14
=44 cm

1 Revolution is of=44 cm
3000 Revolution
=(3000×44)cm
=132,000 cm

1 minute=132000 cm
1 minute=(132000/100) metres

1 minute=1320 metres

We know that 1 minute=60 seconds
SPEED= DISTANCE/TIME
SPEED=1320/60

SPEED=22 m/s

Answer 2

Answer:

Step-by-step explanation:

Given

Diameter=14cm

It rotates in 1minute=3000

Circumference=22/7×14=44m