Question

The radius of the wheel is 1.75m and it makes 3 revolution per second .The speed of the wheel is

Answer 1

Hey!!!!!

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For a wheel, we have

r = 1.75 m
revolutions = 3

distance covered in 3 revolutions
=> Circumference x 3

Circumference = 2πr

Thus Circumference =>
$2 \times \frac{22}{7} \times 1.75$

Cancelling 1.75 with 7


$44 \times 0.25$

Distance = 3 x 11

=> Distance = 33m

Time = 3 seconds

Thus

$speed = \frac{distance}{time}$

Thus speed = 33/3

Thus speed = 11 m/s

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Hope this helps ✌️

Legally Good Morning :-)

Answer 2

Heya !!

Here's your answer.. ⬇⬇
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➡ Given :- Radius ( r ) = 1.75 m
Time ( t ) = 3 sec.
Revolutions = 3

➡ To Find :- Speed = ?

➡ Solution :- To Find speed we have to find distance so by taking formula ( s = d/t ) we can find speed.

Distance covered by wheel in one revolution = circumference of wheel.

= 2πr
= 2 × 22/7 × 1.75
= 11 m

Distance covered by 3 revolutions = circumference of wheel × 3

= 11 × 3
= 33 m

Total Distance covered in 3 revolutions = 33 m
Time = 3 sec.

Speed = Distance/Time ( s = d/t )

Speed = 33/3

speed = 11 m/s

➡ Speed of wheel is 11 m/s.
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Hope it helps..
Thanks :)