AIPMT MAINS2012Physics-System of Particles
AIPMT MAINS 2012 Physics Center of Mass MCQ Question
Type: MCQ-numerical-Medium-Class 11
Three masses are placed on the x-axis: 300 g at origin, 500 g at x = 40 cm and 400 g at x = 70 cm. The distance of the centre of mass from the origin is:
A
40 cm
B
45 cm
C
50 cm
D
30 cm
Correct Answer
Option A
Detailed Explanation
The center of mass X_cm is calculated using the formula X_cm = (Σm_ix_i) / Σm_i. Substituting the given values, X_cm = (300×0 + 500×40 + 400×70) / (300 + 500 + 400) = 40 cm.
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