The speedometer of a truck is set to read the linear speed of the truck, but uses a device that actually meausres the angular speed of the rolling tires that came with the truck. However, the owner replaces the tires with larger-diameter versions. Does the reading on the speedometer after the replacement give a speed that is less than, equal to, or greater than the true linear speed of the truck?
Answers: 2
is proportional to the radius and angular velocity and is defined as:
, linear speed is directly proportional to 
. The angular displacement will however decrease thus a lower reading on the speedometer.
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