GAMSAT Physics Equation Lists (Formulas and Topics)

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GAMSAT Physics Equation List (formulas) and practice problems in dimensional analysis

GAMSAT Maths and Physics Section 3

Memorise These!

Momentum, Impulse
PHY 4.3
M = mv  
Energy (conservation)
PHY 5.5
ET = Ek + Ep  
Work, Power
PHY 5.7
P = ΔW/Δt  
PHY 10.1
I = Q/t  
Resistors (series, par.)
PHY 10.2
Req = R1 + R2 . . . 1/ Req = 1/ R1 +1/ R2 . . .
Capacitors (series, par.)
PHY 10.4
1/ Ceq = 1/ C1 +1/ C2 . . . Ceq = C1 + C2 . . .
Kirchoff's Laws
PHY 10.3.1
Σi = 0 at a junction ΣΔV = 0 in a loop
Torque forces
PHY 4.1
L1 = F1× r1 (CCW + ve) L2 = F2 × r2 (CW -ve)
Torque force at EQ
PHY 4.1
ΣFx = 0 and ΣFy = 0 ΣL = 0
PHY 2.2
F = ma  
PHY 2.1
W = mg  
PHY 6.1.2
P = F/A  
Buoyant Force
PHY 6.1.1
ρ = mass / volume Fb= Vρg = mg 
PHY 11.3
M = magnification = - i/o  

Memorise as Pairs

F = KG ( m1 m2 / r2 )
PHY 2.4 and 9.1.2
F = k ( q1 q2 / r2 )  
V = IR
PHY 10.1 and 10.5
P = IV Paired Use
vav = Δ d / Δ t
PHY. 1.4.1
aav = Δ v / Δ t (avg vel, acc)
v = λ f
PHY 7.1.2 and 9.2.4
E = hf (f = 1/T)
Ek = 1/2 mv2
PHY 5.3-4
Ep = mgh (kin, pot E)

We Suggest (can Save Time during Exam)

Translational motion
PHY 1.6 and 2.5
x = xo + vo t + 1/2at2    |    (Vf)2 = (Vo)2 + 2ax Vf = Vo + at
Uniform circular motion
PHY 3.3
Fc = mac = mv2 /r ac= v2 /r
Work, Power
PHY 5.1 and 5.7
W = F d cosθ P = ΔW/Δt
Spring Force, Work
PHY 7.2.1
F = -kx W = kx2 /2
PHY 7.2.1
(sin θ1 )/(sin θ2 ) = v1 /v2 = n2 /n1 = λ12 n = c/v
PHY 6.1.2
Δ Ρ = ρgΔh  
Atomic Physics
PHY 12.4
If the number of half-lifes n are known we can calculate the percentage of a pure radioactive sample left after undergoing decay since the fraction remaining = (1/2)n

Occasionally Helpful for Theoretical Questions

Frictional force
PHY 3.2
fmax = μN μk < μs always
Momentum, Impulse
PHY 4.3
I = F Δt = ΔM  
Electric Force
PHY 9.1.2
F = qE  
PHY 11.5
1/ i + 1/ o = 1/ f = 2/r = Power  
Specific Gravity
PHY 6.1.1
SG = ρ substance / ρ water ρ = 1 g/cm3 = 103 kg/m3 (H2O)
Note: Specific gravity (SG) is equivalent to the fraction of the height of a buoyant object below the surface of the fluid.

Don't Memorise, Know How to Use...

Fluids in Motion
PHY 5.3-4
Bernouilli's Equation

Ρ + ρgh + 1/2 ρv2 = constant

Solids, Temp Δ
PHY 5.3-4
Linear Expansion L = Lo (1 + αΔ T )
  Area Expansion
PHY 6.3
A = Ao(1 + γΔ T )
β = 3 α
PHY 6.3
Volume Expansion

V = Vo(1 + βΔ T )

Doppler Effect: when d is decreasing use + vo and - vs
PHY 8.5.1
fo = fs (V ± vo )/( V ± vs )  
d = the distance between the plates
PHY 10.4
V = Ed for a parallel plate capacitor  
RH rule
PHY 9.2.3
Laplace's Law dF = dq v(B sin α) = I dl(B sin α)
W = 1/2 CV2
PHY 10.4
Work in Electricity Potential Energy ( PE ) = W = 1/2 QV
ΔG° = -RTln Keq
CHM 9.10
Gibbs Free Energy ΔG = ΔH - TΔS
Continuity (fluids)
PHY 6.1.3
A v = const. ρAv = const.
PHY8.3.1 -4
dB = 10 log 10 (I/I0 ) beats = Δ f
PHY 8.7
Q = mc Δ T  
Root Mean Sq
PHY 10.5
Irms = Imax / √2  
Energy (conservation)
PHY 12.3
E = mc2  

The Basics

sin θ = opp/hyp cos θ = adj/hyp tan θ =opp/adj
θ = sin-1 x arcsec θ = sec-1θ r2 = x2 + y2

Please note: ACER announced in 2011 that calculators will no longer be permitted for GAMSAT Section 3. Our updated list of GAMSAT Physics Topics can be found towards the bottom of this page.

Some Units to Memorise

GAMSAT Physics Topics

The following GAMSAT Physics Topic list or syllabus is not meant to be exhaustive nor definitive. It is a guideline for topics that we cover for the GAMSAT preparation course during our live classes and in the videos that we have online or as DVDs.

TOPICS: The Atom, Nuclear Reactions, Radioactive Decay and Half-Life, Electricity vs. Gravity, Electric Circuits, Kirchhoff's Laws, Characteristics of Waves, Diffraction, Optics, Sound, Doppler Effect, Electromagnetism, Electromagnetic Spectrum, Reflection, Refraction, Thin Lens, Snell's Law, The Critical Angle, Force and Motion, Weight and Units, Friction, Applying Newton's Laws, Trigonometry, Projectile Motion, Work, Circular Motion, Work-Energy Theorem, Energy and Entropy, Momentum, Law of Torques, Fluids, Fluids in Motion, Archimedes' Principle

Gold Standard's GAMSAT Guide

To help you prepare for the exam, Gold Standard GAMSAT has assembled comprehensive information on GAMSAT scores, topics covered, preparation advice, free GAMSAT sample questions and other study resources.

  • What is the GAMSAT? -'s detailed guide about the GAMSAT
  • GAMSAT Scores - A complete resource that explains how the GAMSAT is scored and other questions relating to GAMSAT scoring
  • Free GAMSAT Resources - A comprehensive guide on preparing for each section of the GAMSAT with links to relevant study resources
  • Australian Medical Schools Admission Requirements - A comprehensive list of GAMSAT scores and GPA scores for graduate entry medicine (GEM) programmes in Australia and Australasia
  • Free GAMSAT Study Schedule - Even if you don't own any of the Gold Standard GAMSAT materials, this study schedule remains helpful as it details the subjects covered for review and practice on a daily basis.
  • GAMSAT Study Tips on Efficient Note-taking - One of our popular resources! Read tips on how to consolidate your review by creating brief notes a.k.a. Gold Notes that will be vital in your daily review in the lead up to the real exam.
  • Free Monthly GAMSAT Webinars - Take advantage of our free monthly online seminars (webinars) using a problem-based learning approach on the different topics in the GAMSAT and get a chance to win a GAMSAT giveaway.
  • Non-science Background GAMSAT Preparation - Dr Ferdinand (author of The Gold Standard GAMSAT books) outlines the 70/30 formula to get a high score. Also includes a link to advice on related topics.

Free GAMSAT practice:

  • Free GAMSAT Practice Test - This abbreviated, timed practice test includes all three sections with instant scaled scores and helpful worked solutions.
  • GAMSAT Practice Question of the Day - Develop your GAMSAT reasoning skills with daily practice, one subject at a time
  • GAMSAT Physics Sample Questions - 15 free GAMSAT Physics sample questions with answers and worked solutions to hone your basic problem-solving skills and understanding of Section 3 material
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