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A particle of mass $m = 0.5 \text{ kg}$ is moving in a circle of radius $r = 2 \text{ m}$ with a constant speed of $v = 4 \text{ m/s}$. What is the net force $F$ acting on the particle?
- A.$2 \text{ N}$
- B.$4 \text{ N}$
- C.$8 \text{ N}$
- D.$16 \text{ N}$
Show correct answer & step-by-step solution
Correct answer: B — $4 \text{ N}$
Solution
For uniform circular motion, the net force is the centripetal force given by . Substituting the values, .
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