Given:
Amount of extension in elastic spring∝ the weight hung on it
Extension produced by weight of 150 gm = 2.9 cm
To find:
What weight would produce an extension of 17.4 cm.
Solution:
150 produces 2.9 cm extension
Then 1 cm would be extended by 150/2.9 gm of weight.
∴ 1 cm will be extended by 51.72 gm of weight.
To produce an extension of 17.4 cm, 51.72*17.4 gm of weight will be needed.
Therefore to produce an extension of 17.4 cm, 900 gm of weight will be needed.
Therefore, the answer is 900 gm.
Answer:
Given:
x= 2.9 cm I 17.4 cm
y= 150 gm I Y
procedure:
=> 2.9 = 17.4
150 y
=> 2.9y = 2610
=> y= 2610 x 10
29
=> y = 900
:. y= 900 gm
