Physics
Grade-9
Easy
Question
A system of block and mass exhibiting oscillation must possess:
- Inertia only
- Elasticity only
- Elasticity as well as inertia
- Elasticity, inertia, and an external force
Hint:
Simple Harmonic Motion or SHM is defined as a motion in which the restoring force is directly proportional to the displacement of the body from its mean position.
The correct answer is: Elasticity as well as inertia
Correct option is C)
Basic conditions to execute simple harmonic motion are: (i) There must be an elastic restoring force acting on the system, (ii) the system must have inertia, and (iii) the acceleration of the system should be directly proportional to its displacement and is always directed to mean position.
Basic conditions to execute simple harmonic motion are: (i) There must be an elastic restoring force acting on the system, (ii) the system must have inertia, and (iii) the acceleration of the system should be directly proportional to its displacement and is always directed to mean position.
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| b. Periodic motion |
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Match the following.
| a. Vibratory motion |
1. It is a kind of repetitive motion that repeats itself after a fixed interval (or regular intervals) of time. |
| b. Periodic motion |
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| c. Uniform motion |
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