Published by:
CGP EDU Academic Team
Published on: August 14, 2026
(i) In a Δ ABC if a = 13 cm, b = 14 cm, and
c = 15 cm then find the area of triangle.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Sol. Moment of inertia of the cylinder about its axis
= 
MR 2 = 
× 20× (0.25) 2 kg m 2 = 0.625 kg m 2 Rotational K.E.
E r = 
I ω
2 = 
× 0.625 × (100) 2 J = 3125 J
Angular momentum
L = I ω = 0.625 × 100 Js = 62.5 Js
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