A mass moves in a circle of radius at a constant speed of . What is the centripetal force (in N)?

Answer and explanation

Correct answer: C. 18

  1. Step 1: The centripetal force required to sustain circular motion of radius at tangential speed is given by .
  2. Step 2: Substitute mass , radius , and velocity : .
  3. Step 3: Calculating the terms yields .
Answer
18.
Why not the others: The alternative options (48, 3, 72) omit the factor of in kinetic energy or confuse momentum with kinetic energy.

Practise more Circular motion.

Free questions with an explanation for every one, and full timed CBSE Class 12 mock tests.

All Circular motion questionsTake a mock test

More Circular motion questions

Revise with flashcards

A 2 kg mass moves in a… | CBSE Class 12 Circular motion