Q.8. A block of mass m = 2 kg is placed against a spring of spring constantk := 1960 N/m on a frictionless inclined plane with an angle 0= 30° to the hori-zontal, at the equilibrium position O of the spring. The block is pushed against thespring compressing it a distance x to point A, x OA then released from rest.If the compression of the spring is x = 20 cm then the difference in gravitationalpotential energy of the block between point A and point B (highest point) is:a. AP. E, = 9.8J%3Db. AP. E, = 39.2 Jc. ΔΡ. Εg= -9.8 J%3Dd. AP. Eg = 22.05 J%3D

Lets have some discussion about the above conditions as- Let have Ug as a reference point for the…

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