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Question 19N.1.SL.TZ0.22

Date	November 2019	Marks available	[Maximum mark: 1]	Reference code	19N.1.SL.TZ0.22
Level	SL	Paper	1	Time zone	TZ0
Command term		Question number	22	Adapted from	N/A

22.

[Maximum mark: 1]

19N.1.SL.TZ0.22

An object of mass m makes n revolutions per second around a circle of radius r at a constant speed. What is the kinetic energy of the object?

A. 0

B. $\frac{1}{2} π^{2} m n^{2} r^{2}$

C. $2 π^{2} m n^{2} r^{2}$

D. $4 π^{2} m n^{2} r^{2}$

[1]

Markscheme

C

Syllabus sections

Core » Topic 6: Circular motion and gravitation » 6.1 – Circular motion

Core » Topic 2: Mechanics » 2.3 – Work, energy, and power

Core » Topic 2: Mechanics

Core » Topic 6: Circular motion and gravitation