When a rubber strip with a cross section of 3 mm x 1.5 mm is suspended vertically and various masses are attached to it, a student obtains the following data for length versus load:

(a) Find Young’s modulus for the rubber strip for small loads.

(b) Find the energy stored in the strip when the load is 150 g.

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|Load, g Length, cm 0 100 200 300 300 500 5.6 6.2 6.9 7.8 10.0 5.0