Read Inertia force and relative motion · Class 6 Q12
This SOF ISO pattern tests analyse motion or force effects. Read the condition carefully, then use the method below before you solve.
Motion and force questions become simpler when direction, starting condition, time and the acting forces are marked first.
Draw every push or pull as an arrow
Balanced arrows: no change · unbalanced: acceleration
Arrows show direction. Balanced arrows give no change in motion; an unbalanced resultant points toward the acceleration.
Find the tested idea
Write down the quantities, directions or conditions given in the stem before selecting a formula or rule.
Work from the evidence
Use one governing relationship at a time. For a visual question, trace the path; for a numerical question, keep units and signs consistent.
Verify before choosing
Use the wording, diagram and units exactly as given. Select an option only after it satisfies every stated condition.
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- ✓Extract the condition.
- ✓Apply one governing rule.
- ✓Check sign, unit or direction.
Check the result against a simple limiting case, diagram direction or unit before choosing an option.
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