- A$[A]$
- B$[{A^2}]$
- ✓$[{A^{ - 1}}]$
- DNone of these
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$1.$ The phase space diagram for a ball thrown vertically up from ground is
mcq $Image$
$2.$ The phase space diagram for simple harmonic motion is a circle centered at the origin. In the figure, the two circles represent the same oscillator but for different initial conditions, and $E_1$ and $E_2$ are the total mechanical energies respectively. Then $Image$
$(A)$ $ E_1=\sqrt{2} E_2$ $(B)$ $ E_1=2 E_2$
$(C)$ $ E_1=4 E_2$ $(D)$ $ E_1=16 E_2$
$3.$ Consider the spring-mass system, with the mass submerged in water, as shown in the figure. The phase space diagram for one cycle of this system is $Image$
mcq $Image$
Give the answer question $1,2$ and $3.$


Assertion $A :$ Moment of inertia of a circular disc of mass $'M'$ and radius $'R'$ about $X, Y$ axes (passing through its plane) and $Z-$axis which is perpendicular to its plane were found to be $I_{x}, I_{y}$ and ${I}_{z}$ respectively. The respective radii of gyration about all the three axes will be the same.
Reason $R$ : A rigid body making rotational motion has fixed mass and shape.
In the light of the above statements, choose the most appropriate answer from the options given below :
