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Question 18N.3.HL.TZ0.11a

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.3.HL.TZ0.11a
Level HL Paper 3 Time zone TZ0
Command term Explain, State Question number a Adapted from N/A
a.
[Maximum mark: 2]
18N.3.HL.TZ0.11a

A mass is attached to a vertical spring. The other end of the spring is attached to the driver of an oscillator.

The mass is performing very lightly damped harmonic oscillations. The frequency of the driver is higher than the natural frequency of the system. At one instant the driver is moving downwards.

(a)

State and explain the direction of motion of the mass at this instant.

[2]

Markscheme

because the mass and the driver are out of phase «by π » ✔

so upwards ✔

 

Justification needed for MP2

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