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Match the following columns. {:("Colum...

Match the following columns.
`{:("Column I","Column II"),("(A) Force of friction","(p) Oppose motion"),("(B) Normal reaction on a block kept on horizontal ground","(q) Oppose relative motion"),(,"(r) Is always mg"),(,"(s) May be equal to mg"),(,"(t) None"):}`

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The correct Answer is:
To solve the problem of matching the columns, we will analyze each item in Column I and find the appropriate match in Column II. ### Step-by-Step Solution: 1. **Analyze Option (A) - Force of friction**: - The force of friction is known to oppose the relative motion between two surfaces in contact. - Therefore, the correct match for (A) is **(q) Oppose relative motion**. 2. **Analyze Option (B) - Normal reaction on a block kept on horizontal ground**: - The normal force acts perpendicular to the surface. For a block resting on horizontal ground, the normal force balances the weight of the block (mg) when no other vertical forces are acting. - If there are no additional vertical forces, the normal reaction is equal to the weight of the block (mg). However, if there are additional forces acting downwards, the normal force can be greater than mg. - Thus, the normal reaction may be equal to mg, leading us to match (B) with **(s) May be equal to mg**. 3. **Final Matches**: - (A) Force of friction → (q) Oppose relative motion - (B) Normal reaction on a block kept on horizontal ground → (s) May be equal to mg ### Summary of Matches: - (A) → (q) - (B) → (s)
To solve the problem of matching the columns, we will analyze each item in Column I and find the appropriate match in Column II. ### Step-by-Step Solution: 1. **Analyze Option (A) - Force of friction**: - The force of friction is known to oppose the relative motion between two surfaces in contact. - Therefore, the correct match for (A) is **(q) Oppose relative motion**. ...
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