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CAIE A-Level Physics A2 12.2 Centripetal Acceleration Questions

Practise relating inward acceleration and resultant force in uniform circular motion to speed, radius and the forces acting on the object.

Syllabus
2028–2030
Course
Physics 9702
Level
A2

Exam points

  • explain how a perpendicular constant-magnitude force produces centripetal acceleration and constant-angular-speed circular motion
  • calculate centripetal acceleration using a = rω² or a = v²/r
  • calculate centripetal force using F = mrω² or F = mv²/r and identify the physical force supplying it

Covered syllabus points

12.2.1—A force of constant magnitude that is always perpendicular to the direction12.2.2—Centripetal acceleration causes circular motion with a constant angular12.2.3—A = rω2 and a = v2 / r12.2.4—F = mrω2 and F = mv2 / r

Question 1

[Maximum number: 3]

A second piece of modelling clay is attached to the disc in the position shown in Fig. 1.2.

Fig. 1.2

Fig. 1.2

The second piece of modelling clay has a larger mass than the first piece.
By placing one tick (✓)(\checkmark) in each row, complete Table 1.1 to show how the quantities indicated compare for the two pieces of modelling clay.

Table 1.1

Table 1.1

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