Question

the radius of wheel of vehicle is 70cm.the wheel makes 10 revolution in 5 second ,then what is the speed of the wheel?

Answer 1

Radius of wheel = 70 cm.

Circumference of wheel = 2πr

➡ 2 × 22/7 × 70 = 440 cm

➡ 4400 cm = 4•4 m

Distance covered in 1 revolution = circumference of wheel.

➡ Distance covered in 1 revolution=4•4m

➡ Distance covered in 10 revolution = 4•4 × 10 = 44 m

Now,

It is given that wheel makes 10 revolutions in 5 seconds.

so,

Speed = distance/time

Speed = 44/5 = 8•8 m/s

Answer :-

Speed of the wheel is 8•8 m/s.

Hope it will help you !!!

Answer 2

Answer:

8.8sec hope it helped you