1
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Three solid spheres each of mass '$$M$$' and radius '$$R$$' are arranged as shown in the figure. The moment of inertia of the system about YY' will be

MHT CET 2021 23th September Morning Shift Physics - Rotational Motion Question 8 English

A
$$\frac{16}{5} \mathrm{MR}^2$$
B
$$\frac{21}{5} \mathrm{MR}^2$$
C
$$\frac{7}{5} \mathrm{MR}^2$$
D
$$\frac{11}{5} \mathrm{MR}^2$$
2
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

MHT CET 2021 23th September Morning Shift Physics - Rotational Motion Question 9 English

Figure shows triangular lamina which can rotate about different axes moment of inertia is maximum, about the axis

A
PR
B
QS
C
QR
D
PQ
3
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A particle with position vector $$\overrightarrow{\mathrm{r}}$$ has a linear momentum $$\overrightarrow{\mathrm{P}}$$. Which one of the following statements is true in respect of its angular momentum 'L' about the origin?

A
$$\overrightarrow{\mathrm{L}}$$ acts along $$\overrightarrow{\mathrm{P}}$$.
B
L is maximum when $$\overrightarrow{\mathrm{P}}$$ is perpendicular to $$\overrightarrow{\mathrm{r}}$$.
C
$$\overrightarrow{\mathrm{L}}$$ acts along $$\overrightarrow{\mathrm{r}}$$.
D
L is maximum when $$\overrightarrow{\mathrm{P}}$$ and $$\overrightarrow{\mathrm{r}}$$ are parallel.
4
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A child is standing with folded hands at the centre of the platform rotating about its central axis. The kinetic energy of the system is '$$K$$'. The child now stretches his arms so that the moment of inertia of the system becomes double. The kinetic energy of the system now is

A
$$\frac{K}{2}$$
B
$$2 \mathrm{~K}$$
C
$$4 \mathrm{~K}$$
D
$$\frac{\mathrm{K}}{4}$$
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