MHT CET · Physics · Rotational Motion
If there is a change of angular momentum from 1J-s to 4J-s in 4 second, then the torque is
- A \(1 \mathrm{~J}\)
- B \(\left(\frac{3}{4}\right) \mathrm{J}\)
- C \(\left(\frac{5}{4}\right) \mathrm{J}\)
- D \(\left(\frac{4}{3}\right) \mathrm{J}\)
Answer & Solution
Correct Answer
(B) \(\left(\frac{3}{4}\right) \mathrm{J}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{L}_{1}=1 \mathrm{~J} \mathrm{~s} \quad \mathrm{~L}_{2}=4 \mathrm{~J} \mathrm{~s}\)
\(\mathrm{t}=4\)
\(\tau=\frac{4-1}{4}=\frac{3}{4} \mathrm{~J}\)
\(\mathrm{t}=4\)
\(\tau=\frac{4-1}{4}=\frac{3}{4} \mathrm{~J}\)
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