A Form Four student is investigating Hooke's law. She attaches various masses to a spring of length 80 cm and measures the extension produced. She obtains the following data: 10 30 Mass/g Weight/N Extension/cm 0-4 1-2 a) Complete the table. (g = 10 Nkg¹) 50 2-0 80 3.2 100 4-0 150 6.0 180 7-2 200 8-0 b) Plot a graph of extension (y-axis) against weight (x-axis). Use the graph paper on the next page. [4] [10].
