4. A dog sits 1.5 m from the center of a merry-go-round. The merry-go round is set in motion, and the dog's tangential speed is 1.5 m/s. What is the dog's centripetal acceleration? 5. A race car moving along a circular track has a centripetal acceleration of 15.4 m/s². If the car has a tangential speed of 30.0 m/s, what is the distance between the car and the center of the track? 6. A pilot is flying a small plane at 56.6 m/s in a circular path with a radius of 188.5 m. The centripetal force needed to maintain the plane's circular motion is 1.89 x 104 N. What is the plane's mass?

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.