AP EAMCET · PHYSICS · Motion In Two Dimensions
A particle of mass 5 kg is moving on a circle of radius 1m with an angular velocity of \(2 \mathrm{rads}^{-1}\). The centripetal force is
- A 10 N
- B 40 N
- C 30 N
- D 20 N
Answer & Solution
Correct Answer
(D) 20 N
Step-by-step Solution
Detailed explanation
Given, mass, m = 5kg, radius, r = 1m Angular velocity, \(\omega=2 \mathrm{rad} \mathrm{s}^{-1}\) Centripetal force = Mass * Centripetal acceleration \(\begin{aligned} & =m \times \omega^2 r \\ & =5 \times(2)^2 \times 1 \\ & =20 \mathrm{~N}\end{aligned}\)
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