Dimensional Analysis (energy)
Easyphysics
The dimensions of energy are represented by?
Select the correct option:
Solution
Incorrect! Answer:
- Definition: Energy is the capacity to do work. Work is defined as force multiplied by displacement in the direction of the force (W=F⋅s).
- Dimension of Force: Force =mass×acceleration=[M]×[LT−2]=[MLT−2].
- Dimension of Work/Energy:
- [Energy]=[Force]×[Length]
- [Energy]=[MLT−2]×[L]=[ML2T−2].
- Universal Truth: All forms of energy (Kinetic, Potential, Heat, etc.) have the same dimensions: [ML2T−2].
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About This Question
- Subject
- physics
- Chapter
- physics and measurement
- Topic
- dimensional analysis (energy)
- Difficulty
- Easy
- Year
- 2025
Solution
- Definition: Energy is the capacity to do work. Work is defined as force multiplied by displacement in the direction of the force (W=F⋅s).
- Dimension of Force: Force =mass×acceleration=[M]×[LT−2]=[MLT−2].
- Dimension of Work/Energy:
- [Energy]=[Force]×[Length]
- [Energy]=[MLT−2]×[L]=[ML2T−2].
- Universal Truth: All forms of energy (Kinetic, Potential, Heat, etc.) have the same dimensions: [ML2T−2].
This easy difficulty physics question is from the chapter physics and measurement, covering the topic of dimensional analysis (energy). It appeared in the 2025 exam.
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