A spring was hung from hook in the ceiling. . A number of different weight were attached to the spring to make it stretch, and the total of the spring was measured each time shown in the following table. {:("Weight(kg)",2,4,5,8),("Length (cm)",3,4,4.5,6):} (i) Draw a graph showing the results . (ii) Find the equation relating the length of the spring to the weight on it . (iii) What is the actual length of the spring . (iv) If the spring has to stretch to 9 cm long , how much weight should be added ? (v) How long will the spring be when 6 kilograms of weight on it ?

A spring was hung from hook in the ceiling. . A number of different we

1.	A spring was hung from hook in the ceiling. . A number of different weight were attached to the spring to make it stretch, and the total of the spring was measured each time shown in the following table. {:("Weight(kg)",2,4,5,8),("Length (cm)",3,4,4.5,6):} (i) Draw a graph showing the results . (ii) Find the equation relating the length of the spring to the weight on it . (iii) What is the actual length of the spring . (iv) If the spring has to stretch to 9 cm long , how much weight should be added ? (v) How long will the spring be when 6 kilograms of weight on it ?
Answer» Answer :(i) `(X-2)/(4-2)`,(ii) x - 2Y + 4 = 0 (iii) 2cm 5 cm .