Change one thing. What happens?

F = ma

F ∝ m, F ∝ a

KE = ½mv²

KE ∝ v²

p = mv

p ∝ m, p ∝ v

PE = mgh

PE ∝ h

F = mv²/r

F ∝ v², F ∝ 1/r

W = Fs cos θ

W ∝ F, W ∝ s

P = W/t

P ∝ 1/t

T = 2π√(l/g)

T ∝ √l, T ∝ 1/√g

τ = rF sin θ

τ ∝ r, τ ∝ F

I = MR²

I ∝ R²

F = Gm₁m₂/r²

F ∝ 1/r²

vₑ = √(2GM/R)

vₑ ∝ √(M/R)

T² ∝ r³

T ∝ r^(3/2)

v = √(GM/r)

v ∝ 1/√r

P = F/A

P ∝ 1/A

P = ρgh

P ∝ h

F_b = ρVg

F_b ∝ V displaced

Y = (F/A)/(ΔL/L)

ΔL ∝ FL/A

Q = mcΔT

Q ∝ m, Q ∝ ΔT

PV = nRT

P ∝ 1/V at constant T

v_rms = √(3RT/M)

v ∝ √T, v ∝ 1/√M

ΔL = LαΔT

ΔL ∝ L, ΔL ∝ ΔT

v = fλ

λ ∝ 1/f at fixed v

f = (1/2L)√(T/μ)

f ∝ 1/L, f ∝ √T

f_beat = |f₁ − f₂|

difference of frequencies

v = √(γP/ρ)

v ∝ √T

P = 1/f (metres)

P ∝ 1/f

m = v/u = h'/h

m ∝ v

n = sin i / sin r

n = c/v

sin C = 1/n

sin C ∝ 1/n

β = λD/d

β ∝ λ, β ∝ D, β ∝ 1/d

V = IR

I ∝ V at constant R

R = ρL/A

R ∝ L, R ∝ 1/A

P = V²/R = I²R

P ∝ V² at fixed R

F = kq₁q₂/r²

F ∝ 1/r²

C = ε₀A/d

C ∝ A, C ∝ 1/d

F = BIL sin θ

F ∝ I, F ∝ B

ε = −dΦ/dt

ε ∝ rate of change of flux

λ = h/p = h/mv

λ ∝ 1/p

KE_max = hf − φ

KE ∝ f (above threshold)

rₙ ∝ n²/Z

r ∝ n²

N = N₀(½)^(t/T½)

halves each half-life