Question Detail

PHY 101 PHY 101 Past Questions Objective Question
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Question

Two equal masses m at the ends of a mass-less thin bar of length l. Calculate the moment of inertia for an axis perpendicular to the bar through the centre.
Options
A ml²/3
B ml²/2
Correct Answer
C ml²
D 2ml²
Correct Answer

Option B is the correct answer.

Detailed Explanation

Each mass is at distance l/2 from center. I = m(l/2)² + m(l/2)² = 2 × m × l²/4 = ml²/2.

Hint

I = Σmr².

Question Info

Course: PHY 101
Topic: PHY 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 1049 of 1250
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