Question

if 22.5 metre of a uniform rod weigh 85.5 kg what will be length of 22.8kg of a same rod
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Answer 1

Answer:

The length of 22.8 kg of the rod is 6 meters.

This types of question can be solve by unit analysis or per unit measure .

Given ,

length of 85.5 kg of uniform rod = 22.5 m

then ,

length of 1 kg of uniform rod = (22.5 / 85.5) m

length of 22.8 kg of the same rod = (22.5 / 85.5) * 22.8 m

= 6m