1
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

A block of mass $$m$$ attached to one end of the vertical spring produces extension $$x$$. If the block is pulled and released, the periodic time of oscillation is

A
$$2 \pi \sqrt{\frac{x}{4 g}}$$
B
$$2 \pi \sqrt{\frac{2 x}{g}}$$
C
$$2 \pi \sqrt{\frac{x}{2 g}}$$
D
$$2 \pi \sqrt{\frac{x}{g}}$$
2
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

A simple pendulum of length $$L$$ has mass $$m$$ and it oscillates freely with amplitude $$A$$. At extreme position, its potential energy is ($$g=$$ acceleration due to gravity)

A
$$\frac{m g A}{L}$$
B
$$\frac{m g A}{2 l}$$
C
$$\frac{m g A^2}{L}$$
D
$$\frac{m g A^2}{2 L}$$
3
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

For a particle performing SHM when displacement is $$x$$, the potential energy and restoring force acting on it is denoted by $$E$$ and $$F$$, respectively. The relation between $$x, E$$ and $$F$$ is

A
$$\frac{E}{F}+x=0$$
B
$$\frac{2 E}{F}-x=0$$
C
$$\frac{2 E}{F}+x=0$$
D
$$\frac{E}{F}-x=0$$
4
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A person measures a time period of a simple pendulum inside a stationary lift and finds it to be $T$. If the lift starts accelerating upwards with an acceleration $\left(\frac{g}{3}\right)$, the time period of the pendulum will be

A
$\frac{T}{\sqrt{3}}$
B
$\sqrt{3} \frac{T}{2}$
C
$\sqrt{3} T$
D
$\frac{T}{3}$
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