DP Physics (first assessment 2025)

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Question SPM.1A.HL.TZ0.7

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.HL.TZ0.7
Level HL Paper 1A Time zone TZ0
Command term Question number 7 Adapted from N/A
7.
[Maximum mark: 1]
SPM.1A.HL.TZ0.7

A cylinder of mass M and radius R rotates at constant angular speed ω about an axis through its centre. The rotational kinetic energy of the cylinder is K.

The moment of inertia of the cylinder is 12MR2.

A second cylinder has mass 2M, radius 2R and rotates with angular speed 2ω.

What is the rotational kinetic energy of the second cylinder?


A.  8K

B.  16K

C.  32K

D.  64K

[1]

Markscheme

C

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