Circular Motion - MDCAT Physics 2023 - MCQS

 

1. A car moves on a circular track at a constant speed. What is the direction of the car's acceleration? (A) Toward the center of the track (B) Away from the center of the track (C) Parallel to the ground (D) Perpendicular to the ground

2. A ball is tied to a string and whirled around in a circle. What is the direction of the force acting on the ball? (A) Toward the center of the circle (B) Away from the center of the circle (C) Parallel to the ground (D) Perpendicular to the ground

3. A car moves on a circular track at a constant speed. What is the net force acting on the car? (A) Zero (B) A constant force toward the center of the circle (C) A constant force away from the center of the circle (D) A variable force that depends on the car's speed

4. A ball is whirled around in a circle on the end of a string. If the string is suddenly cut, what will happen to the ball? (A) The ball will continue to move in a circle. (B) The ball will fly off in a straight line tangent to the circle. (C) The ball will fall to the ground. (D) The ball will stop moving.

5. A car moves on a circular track at a constant speed. If the car's speed is doubled, what will happen to the centripetal force? (A) The centripetal force will double. (B) The centripetal force will quadruple. (C) The centripetal force will remain the same. (D) The centripetal force will decrease by half.

6. A car moves on a circular track at a constant speed. If the radius of the circle is doubled, what will happen to the centripetal force? (A) The centripetal force will double. (B) The centripetal force will quadruple. (C) The centripetal force will remain the same. (D) The centripetal force will decrease by half.

7. A car moves on a circular track at a constant speed. If the mass of the car is doubled, what will happen to the centripetal force? (A) The centripetal force will double. (B) The centripetal force will quadruple. (C) The centripetal force will remain the same. (D) The centripetal force will decrease by half.

8. A car moves on a circular track at a constant speed. If the coefficient of friction between the tires and the road is doubled, what will happen to the car's maximum speed? (A) The car's maximum speed will double. (B) The car's maximum speed will quadruple. (C) The car's maximum speed will remain the same. (D) The car's maximum speed will decrease by half.

9. A car moves on a circular track at a constant speed. If the car's speed is doubled, what will happen to the period of its motion? (A) The period will double. (B) The period will quadruple. (C) The period will remain the same. (D) The period will decrease by half.

10. A car moves on a circular track at a constant speed. If the radius of the circle is doubled, what will happen to the period of its motion? (A) The period will double. (B) The period will quadruple. (C) The period will remain the same. (D) The period will decrease by half.

Here are answers - answers are unverified; consult a mentor

1. A
2. A
3. A
4. B
5. B
6. C
7. C
8. D
9. D
10. C