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Physics · LAWS OF MOTION

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Refer to the given figure showing a block of mass \( 4\text{ kg} \) on an inclined plane at angle \( \theta \). What are the components of the gravitational force \( mg \) parallel and perpendicular to the inclined plane respectively?

Question diagram
  1. A
    \( mg \cos\theta \) and \( mg \sin\theta \)
  2. B
    \( mg \sin\theta \) and \( mg \cos\theta \)
  3. C
    \( mg \tan\theta \) and \( mg \cos\theta \)
  4. D
    \( mg \sin\theta \) and \( mg \tan\theta \)
View Answer & Solution

Correct answer · Option B

\( mg \sin\theta \) and \( mg \cos\theta \)

Explanation

The component of weight along (parallel to) the incline is \( mg \sin\theta \) downwards, and perpendicular to the incline is \( mg \cos\theta \).
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