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Date May 2017 Marks available 1 Reference code 17M.1.HL.TZ2.18
Level Higher level Paper Paper 1 Time zone Time zone 2
Command term Question number 18 Adapted from N/A

Question

A small ball of weight W is attached to a string and moves in a vertical circle of radius R.

What is the smallest kinetic energy of the ball at position X for the ball to maintain the circular motion with radius R?

A.  \(\frac{{W\,R}}{2}\)

B.  W R

C.  2 W R

D.  \(\frac{{5W\,R}}{2}\)

Markscheme

D

Examiners report

[N/A]

Syllabus sections

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