Circular Motion & Gravity Practice Sampler

These flashcards cover key concepts and problems related to circular motion and gravity, providing definitions and answers to practice questions.

What is the maximum speed around a curve with twice the radius if the maximum speed around a level curve is 30 mi/h?

42.4 mi/h

What is the maximum centripetal acceleration at the top of a vertical loop where a roller coaster car maintains contact?

g, downward

Which expression represents a satellite's orbital velocity around a planet?

√GM/r

What path will the rock follow if the string breaks while swung in a horizontal circle?

The rock will move tangentially to the circle.

At a vertical track point C, if the speed is 2 m/s and the mass is 0.1 kg, what is the normal force exerted by the track?

4 N

What is the direction of acceleration for a slowing turntable as seen from above?

To the left

What supports the magnitude of the force the student exerts on the scale at point P on a Ferris wheel?

FScale, because it is the magnitude of the only upward force exerted on the student.

What is the strength of gravity between a 150 kg astronaut and an asteroid of mass 4.67 × 10^12 kg with a radius of 9200 m?

5.52 × 10^-3 N

How can students determine the speed of a ball revolving in a horizontal circle using a timer?

By measuring the total distance covered in a known time.

If the speed of the ball is 3.7 m/s, what is the expected tension in the cord?

5.48 N (inwards)