Physics
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Active recall with 3D-flip cards, then self-grade.
Past papers:1078 questions
Forces and Momentum · EasyQuestion
A rubber band in a model arm is stretched when a mass is suspended from it. How do the dimensions of the rubber band change as the mass is added?
- A. Becomes shorter and thicker
- B. Becomes longer and thinner
- C. Becomes longer and thicker
- D. Stays the same
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Forces and MomentumAnswer
Correct answer
B. Becomes longer and thinner
Stretching extends the band (longer) and reduces its cross-sectional area (thinner). Mass × volume is conserved, so a longer band must be thinner.
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