Post Utme Unilorin 2020 Physics Question 10

Practice objective / multiple choice question 10 from the 2020 Post Utme Unilorin Physics examination.

Post Utme Unilorin 2020 Physics Objective / Multiple Choice
Question 10 POST_UTME_UNILORIN • 2020 • PHYSICS • objective

A particle of mass $m$ is moving in a circular orbit of radius $r$ under the influence of a central force given by $F(r) = \frac{k}{r^2}$. If the particle's angular momentum is $L = 2 \times 10^{-3} , \text{kg} cdot \text{m}^2/\text{s}$, what is the particle's speed?

Answer Options

A. $2 \times 10^2 , \text{m/s}$
Correct Answer B. $2 \times 10^3 , \text{m/s}$
C. $2 \times 10^4 , \text{m/s}$
D. $2 \times 10^5 , \text{m/s}
Correct Answer
B
Correct Option:
$2 \times 10^3 , \text{m/s}$

About This Question

This is Post Utme Unilorin 2020 Physics Question 10. It is one of the objective questions from the 2020 Post Utme Unilorin Physics examination.

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