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Question 19M.2.HL.TZ1.a.ii

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.HL.TZ1.a.ii
Level HL Paper 2 Time zone TZ1
Command term Label Question number a.ii Adapted from N/A
a.ii.
[Maximum mark: 1]
19M.2.HL.TZ1.a.ii

A small metal pendulum bob is suspended at rest from a fixed point with a length of thread of negligible mass. Air resistance is negligible.

The pendulum begins to oscillate. Assume that the motion of the system is simple harmonic, and in one vertical plane.

The graph shows the variation of kinetic energy of the pendulum bob with time.

Label on the graph with the letter X a point where the speed of the pendulum is half that of its initial speed.

[1]

Markscheme

X labels any point on the curve where EK    1 4 of maximum/5 mJ ✔

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