High School

A wheel with a radius of 15 cm is rotating at 20 rpm. Find the linear speed of the wheel in meters per second. Round to 2 decimal places.

A. 1.57 m/s
B. 3.14 m/s
C. 6.28 m/s
D. 9.42 m/s

Answer :

Final answer:

The linear speed of a rotating wheel with a radius of 15 cm and rotating at 20 rpm is approximately 1.57 m/s.

Explanation:

The linear speed of the wheel can be calculated using the formula:

linear speed = radius x angular speed

Given that the radius is 15 cm (0.15 m) and the wheel is rotating at 20 rpm, we convert the rpm to radians/second and then substitute the values to find that the linear speed is approximately 1.57 m/s.

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