the weight of an iron pipe varies directly with its length. if 8 feet of an iron pipe weighs 3.2 kg,find the proportionality constant K and determine the weight of a 36 feet iron pipe.
Answers
Answered by
2
Therefore the value of proportional constant = 0.4.
The weight of a 36 feet iron pipe is 14.4 kg.
Step-by-step explanation:
Given, the weight of an iron pipe varies directly with its length.
i.e w ∝ l [ w = weight, l = length]
⇒w= kl [ k is proportional constant]
w = 3.2 kg when l = 8 feet
∴3.2= k×8
⇒k=(3.2÷8)
⇒k=0.4
Therefore the value of proportional constant = 0.4.
∴w = 0.4 l
When l=36 feet
w= 0.4×36
=14.4 kg
The weight of a 36 feet iron pipe is 14.4 kg.
Similar questions