MCQ
Two unequal masses are tied together with a cord with a compressed spring in between. When the cord is burnt with a match releasing the spring, the two masses fly apart with equal
- AKinetic energy
- BSpeed
- ✓Momentum
- DAcceleration
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$(A)$ $|\vec{\tau}|=\frac{1}{3} \mathrm{Nm}$
$(B)$ The torque $\vec{\tau}$ is in the direction of the unit vector $+\hat{\mathrm{k}}$
$(C)$ The velocity of the body at $\mathrm{t}=1$ is $\overrightarrow{\mathrm{v}}=\frac{1}{2}(\hat{\mathrm{i}}+2 \hat{\mathrm{j}}) \mathrm{m} \mathrm{s}^{-1}$
$(D)$ The magnitude of displacement of the body at $\mathrm{t}=1 \mathrm{~s}$ is $\frac{1}{6} \mathrm{~m}$

