energy is applied by some external agencies
frictional forces dissipate the energy of motion
the frequency of oscillation increases with the mass of the bob
the frequency of oscillation varies with time
the period of oscillation varies with time.
Explanation
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The correct option is B
A body performing SHM loses its energy due to friction within its parts and air resistance. As a result the Amplitude of the motion dimishes slowly until zero when the oscillation becomes damped
The correct answer is:
B. frictional forces dissipate the energy of motion
Explanation:
In a real simple pendulum:
Air resistance and friction at the pivot act on the bob
These forces gradually remove energy from the system
As energy decreases, the amplitude (height of swing) reduces
Why others are wrong:
A: No external energy is added
C: Frequency does not depend on mass
D: Frequency remains nearly constant
E: Period is constant (for small oscillations)
Amplitude decreases = energy loss = friction
So anytime you see diminishing oscillation, think energy is being lost due to friction
Real pendulums are subject to friction and air drag. So, the amplitude of the pendulum Bob diminishes. The correct answer is option B.
The correct answer is: B. frictional forces dissipate the energy of motion
Explanation:
In a simple pendulum, the amplitude (maximum displacement) gradually decreases over time due to the effect of frictional forces, such as:
Air resistance
Friction at the pivot point
These forces dissipate mechanical energy (mainly kinetic energy) as heat, causing the pendulum to lose energy and swing with smaller and smaller amplitudes.
Correct option: B. frictional forces dissipate the energy of motion
The answer is B, the system loses energy gradually due to frictional forces and air resistance which in turn reduces the amplitude of oscillation gradually until it comes to rest.
Thats when you say the motion is damped.
