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PRACTICE · MEMBERSIntermediate · Single correct
PRACTICE / Thermal expansion
A long rod warms up
A 2 m rod has linear expansion coefficient 1.5 × 10⁻⁵ K⁻¹ and warms by 40 K.
Find its length increase.
Organize the givens & assumptions
- L = 2 m
- α = 1.5×10⁻⁵ K⁻¹
- ΔT = 40 K
Uniform free expansion; constant linear coefficient; small strain; rod unrestrained.
- A0.0036 m
- B0.0012 m
- C0.0006 m
- D2.0012 m
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