Question 72: Centre of Mass and Rotational Motion

Question

Two bodies of mass $4 \mathrm{~g}$ and $25 \mathrm{~g}$ are moving with equal kinetic energies. The ratio of magnitude of their linear momentum is :

Accepted Answer

$\begin{aligned}
& \frac{\mathrm{P}_1^2}{2 \mathrm{~m}_1}=\frac{\mathrm{P}_2^2}{2 \mathrm{~m}_2} \
& \frac{\mathrm{P}_1}{\mathrm{P}_2}=\sqrt{\frac{\mathrm{m}_1}{\mathrm{~m}_2}}=\frac{2}{5}
\end{aligned}$

Answer

$3: 5$

Answer

$5: 4$

Answer

$2: 5$

Answer

$4: 5$

Centre of Mass and Rotational Motion

Two bodies of mass 4 \mathrm{~g} and 25 \mathrm{~g} are moving with equal kinetic energies. The ratio of magnitude of their linear momentum is :

Choose the correct answer: