Question 69: 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: