SPM Physics: AHA! Formula Given = Clue Given!

 

In SPM Physics, the formula sheet is not just a list — it’s a set of clues. When a formula is given in the question, it points directly to the concept you need.

Example:

Gravitational potential energy:

$$U=-\frac{G{m}_1{m}_2}{r}$$

Question: An object of mass $m$ is at a distance $r$ from a body of mass $10m$. Substitute:

$$U=-\frac{G(10m)(m)}{r}=-\frac{10G{m}^2}{r}$$

Answer: Option D

Exam traps:

• Don’t panic and invent new formulas.

• Don’t ignore the formula sheet — it’s your guide.

• Always identify the correct formula, substitute carefully, and simplify.

👉 Formula given = clue given. Follow the clue, and the marks follow you.

AHA! Formula given, clue revealed. Not by sight, but by INSIGHT!

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