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Centripetal Force
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| Tutorial ID | Title | Tutorial | Video Tutorial | Revision Notes | Revision Questions | |
|---|---|---|---|---|---|---|
| 7.3 | Centripetal Force |
Centripetal Force Revision Questions
1) A small sphere is moving laterally at 0.4 m/s inside a cylindrical glass as shown in the figure below. What is the maximum diameter the glass must have in order to keep the sphere rotating through the lateral face without touching the lower base of glass? Take g ≈ 10 m/s2.
- 1.6 cm
- 3.2 cm
- 6 cm
- 60 cm
Correct Answer: B
2) What is the minimum velocity a vertical roller coaster must have so that a 40 kg child not exerting any pushing force on the seat when she is at the highest position during rotation? The radius of curvature of the roller coaster is 80 m.
- 2 m/s
- 8.9 m/s
- 28.3 m/s
- 80 m/s
Correct Answer: C
3) The rotor of an engine increases its angular velocity from 2 rad/s to 5 rad/s in 0.1 s. What is the total acceleration of peripheral points of the rotor at the end of this process if its diameter is equal to 20 cm?
- 3.9 m/s2
- 0.39 m/s2
- 3 m/s2
- 2.5 m/s2
Correct Answer: A
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- Rotation Physics tutorial: Centripetal Force. Read the Centripetal Force physics tutorial and build your physics knowledge of Rotation
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- Check your calculations for Rotation questions with our excellent Rotation calculators which contain full equations and calculations clearly displayed line by line. See the Rotation Calculators by iCalculator™ below.
- Continuing learning rotation - read our next physics tutorial: Kinematics of Rotational Motion
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