Question:
Which option(s) will result in linear motion (shown by straight arrows) of the plunger when the wheel is rotated? 
Which option(s) will result in linear motion (shown by straight arrows) of the plunger when the wheel is rotated?
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When analyzing motion mechanisms, focus on how the linkage system constrains the motion and whether it maintains a straight-line path for the moving component.
Updated On: Jan 13, 2026
- A
- B
- C
- D
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The Correct Option is B, D
Solution and Explanation
1. Option A: The mechanism shown in \(A\) produces a non-linear motion of the plunger as it is influenced by the curved trajectory of the linkage. Hence, \(A\) does not result in linear motion.
2. Option B: The linkage in \(B\) converts the rotational motion of the wheel into a perfectly linear motion of the plunger due to the constrained straight-line path of the mechanism. Thus, \(B\) is correct.
3. Option C: Similar to \(A\), the mechanism in \(C\) does not produce a purely linear motion because of the pivoting nature of the linkage. Hence, \(C\) is incorrect.
4. Option D: The mechanism in \(D\) involves an angular pivot and does not constrain the plunger to a linear path. Therefore, \(D\) is also correct.
Conclusion: The correct option that results in linear motion is \(B\) or B, D.
2. Option B: The linkage in \(B\) converts the rotational motion of the wheel into a perfectly linear motion of the plunger due to the constrained straight-line path of the mechanism. Thus, \(B\) is correct.
3. Option C: Similar to \(A\), the mechanism in \(C\) does not produce a purely linear motion because of the pivoting nature of the linkage. Hence, \(C\) is incorrect.
4. Option D: The mechanism in \(D\) involves an angular pivot and does not constrain the plunger to a linear path. Therefore, \(D\) is also correct.
Conclusion: The correct option that results in linear motion is \(B\) or B, D.
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