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A motorbike's tire rotates with a constant angular speed of 62.8 rad/s. The radius of the tire is 30 cm. Assuming that no slipping occurs, the linear speed at a point 20 cm from the tire's center is:

Choose one:

a. 10 m/s
b. 20 m/s
c. 18.8 m/s
d. 12.6 m/s

Answer :

Answer:

12.6 m/s

Explanation:

We know that the linear speed v = rω where r = radius and ω = angular acceleration. Given that ω = 62.8 rad/s and r = 20 cm from center = 0.2 cm

So, v = rω

= 0.2 m × 62.8 rad/s

= 12.56 m/s

≅12.6 m/s

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