Lesson 6.05a-c
6.05a-c Uniform motion in a circle Quiz: OCR Further Maths, Unit 3
20 questions
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Lesson 6.05a-c, Uniform motion in a circle: 20 multiple choice questions for the OCR Further Maths (H245), Unit 3: Mechanics (Y543), written with Revision Ninja.
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The 20 questions
-
What equation relates linear speed v, radius r, and angular speed omega?
- v = r omega^2
- v = r / omega
- v = r omega
- v = r^2 omega
-
What is the centripetal acceleration formula using radius r and angular speed omega?
- r^2 omega
- r omega^2
- r / omega^2
- r omega
-
What is the centripetal acceleration formula in terms of linear speed v and radius r?
- v^2 / r
- v / r
- v r^2
- v / r^2
-
What is the standard SI unit for measuring angular speed in circular motion?
- m s^-1
- rad s^-1
- rad m^-1
- rev min^-1
-
Which equation correctly expresses period T in terms of angular speed omega?
- T = pi omega
- T = 2 pi omega
- T = 2 pi / omega
- T = omega / 2 pi
-
What is the direction of centripetal acceleration for an object moving in a circle?
- Towards the centre
- Away from centre
- Upwards vertically
- Along the tangent
-
What is the direction of the linear velocity vector in uniform circular motion?
- Away from centre
- Towards the centre
- Parallel to axis
- Tangential to circle
-
In uniform circular motion, what is the direction of the net resultant force?
- Tangential to path
- Away from centre
- Towards the centre
- Directly upwards
-
A particle moves in a circle of radius 2 m with angular speed 3 rad s^-1. Calculate linear speed.
- 18 m s^-1
- 5 m s^-1
- 6 m s^-1
- 1.5 m s^-1
-
An object moves in a circle of radius 4 m with linear speed 8 m s^-1. Find angular speed.
- 12 rad s^-1
- 32 rad s^-1
- 0.5 rad s^-1
- 2 rad s^-1
-
A particle moves at 4 m s^-1 in a circle of radius 2 m. Calculate centripetal acceleration.
- 2 m s^-2
- 8 m s^-2
- 16 m s^-2
- 4 m s^-2
-
A mass of 3 kg moves in a 2 m radius circle at 2 rad s^-1. Calculate centripetal force.
- 12 N
- 36 N
- 24 N
- 48 N
-
For a conical pendulum, which force component balances the weight of the pendulum bob?
- Horizontal tension
- Centripetal force
- Vertical tension
- Normal reaction
-
For a conical pendulum, which force component provides the required centripetal force for motion?
- Weight of bob
- Direct normal reaction
- Horizontal tension
- Vertical tension
-
What force provides centripetal acceleration for a car travelling around an unbanked circular track?
- Normal reaction
- Weight
- Friction
- Engine thrust
-
A particle completes one full circular orbit in time T = pi seconds. Calculate its angular speed.
- 3.14 rad s^-1
- 0.5 rad s^-1
- 2 rad s^-1
- 1 rad s^-1
-
What speed v allows a car to negotiate a smooth banked curve of radius r at angle theta?
- sqrt(rg tan theta)
- sqrt(rg cos theta)
- sqrt(rg sin theta)
- rg tan theta
-
A conical pendulum of string length L makes angle theta with vertical. What is path radius r?
- L cos theta
- L tan theta
- L sin theta
- L / sin theta
-
A conical pendulum has length L at angle theta to vertical. What is its angular speed omega?
- sqrt(g L cos theta)
- sqrt(g / (L cos theta))
- g / (L cos theta)
- sqrt(g / (L sin theta))
-
If path radius doubles while angular speed stays constant, how does centripetal force change?
- It quadruples
- It stays unchanged
- It halves
- It doubles
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