COMEDK 2025 Afternoon Shift | Simple Harmonic Motion Question 1 | Physics

Time period of oscillation of a mass suspended from a spring is T . If the spring is cut into four equal parts and the same mass is suspended from one of the parts, the fractional change in time period is

$\frac{1}{8}$

$\frac{1}{4}$

$\frac{1}{2}$

$\frac{1}{6}$

COMEDK 2024 Evening Shift

MCQ (Single Correct Answer)

-0

A body is executing SHM. When its displacements from the mean position are $$4 \mathrm{~cm}$$ and $$5 \mathrm{~cm}$$ it has velocity $$10 \mathrm{~cms}^{-1}$$ and $$8 \mathrm{~cms}^{-1}$$ respectively. Its periodic time $$\mathrm{t}$$ is

$$\frac{2 \pi}{3} \sec$$

2$$\pi$$ sec

$$\frac{3 \pi}{2} \mathrm{sec}$$

$$\pi$$ sec

COMEDK 2024 Afternoon Shift

MCQ (Single Correct Answer)

-0

A circular disc of mass $$20 \mathrm{~kg}$$, having radius $$10 \mathrm{~cm}$$ is suspended by a wire attached to its centre. The wire is twisted by rotating the disc and released. The time period of torsional oscillations is found to be $$1 \mathrm{~s}$$. The torsional spring constant of the wire is

$$6 \mathrm{~N~m} \mathrm{~rad}^{-1}$$

$$9.86 \mathrm{~N~m} \mathrm{~rad}^{-1}$$

$$3.94 \mathrm{~N~m} \mathrm{~rad}^{-1}$$

$$1.264 \mathrm{~N~m} \mathrm{~rad}^{-1}$$

COMEDK 2024 Morning Shift

MCQ (Single Correct Answer)

-0

A particle executes a simple harmonic motion of amplitude $$\mathrm{A}$$. The distance from the mean position at which its kinetic energy is equal to its potential energy is

0.91 A

0.71 A

0.81 A

0.51 A

COMEDK Subjects