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Laws of Motion
Newton's First Law – Equilibrium of Concurrent Forces
1 question from 1 paper, each with its answer.
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- of Laws of Motion
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Concepts tested
- particle under a closed triangle of forces
All Questions
2019 1 question
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A particle moving with velocity $\vec{V}$ is acted by three forces shown by the vector triangle PQR. The velocity of the particle will:
The three forces form a closed triangle taken in the same order, so $\vec{F}_{net}=0$.
$m\frac{d\vec{v}}{dt}=0\Rightarrow\vec{v}=$ constant
So the velocity of the particle remains constant.