Question:
Steel cylinders are made so that each one has a large and small hole through the middle. In the drawing six cylinders have been stacked on top of each other. To stop the cylinders from rolling on the smooth floor they are wedged by heavy blocks at each side of the bottom row. If the heavy blocks are removed, what would be the position of the cylinder when they stopped rolling?
Four possible resting positions are marked below the stack: A and B lie off to one side, C lies at the centre directly beneath the original stack, and D lies off to the other side.
A B C D
Steel cylinders are made so that each one has a large and small hole through the middle. In the drawing six cylinders have been stacked on top of each other. To stop the cylinders from rolling on the smooth floor they are wedged by heavy blocks at each side of the bottom row. If the heavy blocks are removed, what would be the position of the cylinder when they stopped rolling?
Four possible resting positions are marked below the stack: A and B lie off to one side, C lies at the centre directly beneath the original stack, and D lies off to the other side.
A B C D
Four possible resting positions are marked below the stack: A and B lie off to one side, C lies at the centre directly beneath the original stack, and D lies off to the other side.
A B C D
Show Hint
With both end supports removed at the same time, the stack loses balance symmetrically and settles straight down under its own centre, not to one side.
Updated On: Jul 14, 2026
- A
- B
- C
- D
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The Correct Option is C
Solution and Explanation
Removing both end blocks symmetrically causes outer cylinders to roll outward equally on both sides; the stack settles straight down under its own centre of gravity - marked position C (centre), not off to one side (A,B,D).
Final Answer: C, option (3).
Final Answer: C, option (3).
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