A. 50.006m
B. 50.060m
C. 51.600m
D. 51.200m
Correct Answer:
Option A – 50.006m
An iron rod of length 50m and at a temperature of 60°C is heated to 70°C. Calculate its new length. (Linear expansivity of iron = 1.2 x 10-5K-1)
![In the diagram above, AB represents a uniform rod of length 1.50m which is in equilibrium on a pivot at P, If AP = 40cm, calculate the mass of the rod. [g = 10ms‾²]](https://myschool.ng/storage/classroom/15726810946_maths-14.jpg "In the diagram above, AB represents a uniform rod of length 1.50m which is in equilibrium on a pivot at P, If AP = 40cm, calculate the mass of the rod. [g = 10ms‾²]")
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