1
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

For a particle executing S.H.M. having amplitude A, the speed of the article is $\left(\frac{1}{3}\right)^{\text {rd }}$ of its maximum speed when the displacement from the mean position is

A
$\frac{3 \mathrm{~A}}{\sqrt{2}}$
B
$\frac{2 \mathrm{~A}}{3}$
C
$\frac{2 \sqrt{2}}{3} \mathrm{~A}$
D
$\frac{\sqrt{2}}{3} \mathrm{~A}$
2
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The motion of a particle is described by the equation $a=-b x$ where ' $a$ ' is the acceleration, x is the displacement from the equilibrium position and b is a constant. The periodic time will be

A
$\frac{2 \pi}{\mathrm{~b}}$
B
$\frac{2 \pi}{\sqrt{b}}$
C
$2 \pi \sqrt{b}$
D
$2 \sqrt{\frac{\pi}{b}}$
3
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A horizontal platform with a small object placed on it executes a linear S.H.M. in the vertical direction. The amplitude of oscillation is 40 cm . What should be the least period of these oscillations, so that the object is not detached from the platform? [Take $\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2$]

A
$0.2 \pi \mathrm{~s}$
B
$0.3 \pi \mathrm{~s}$
C
$0.4 \pi \mathrm{~s}$
D
$0.5 \pi \mathrm{~s}$
4
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Starting from mean position, a body oscillates simple harmonically with a period ' $T$ '. After what time will its kinetic energy be $75 \%$ of the total energy? $\left(\sin 30^{\circ}=0.5\right)$

A
$\frac{\mathrm{T}}{8}$
B
$\frac{\mathrm{T}}{12}$
C
$\frac{\mathrm{T}}{16}$
D
$\frac{\mathrm{T}}{24}$
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