DP Physics (last assessment 2024)

Test builder »

Question 21N.2.HL.TZ0.3b.i

Select a Test
Date November 2021 Marks available [Maximum mark: 2] Reference code 21N.2.HL.TZ0.3b.i
Level HL Paper 2 Time zone TZ0
Command term Explain Question number b.i Adapted from N/A
b.i.
[Maximum mark: 2]
21N.2.HL.TZ0.3b.i

Two equal positive fixed point charges Q = +44 μC and point P are at the vertices of an equilateral triangle of side 0.48 m.

Point P is now moved closer to the charges.

A point charge q = −2.0 μC and mass 0.25 kg is placed at P. When x is small compared to d, the magnitude of the net force on q is F ≈ 115x.

(b.i)

Explain why q will perform simple harmonic oscillations when it is released.

[2]

Markscheme

force «on q» is proportional to the displacement ✓

and opposite to the displacement / directed towards equilibrium ✓

Syllabus sections