Alight string can support a stationary hanging load of 23.0 kg before breaking. an object of mass m = 2.95 kg attached to the string rotates on a frictionless, horizontal table in a circle of radius r = 0.791 m, and the other end of the string is held fixed as in the figure below. what range of speeds can the object have before the string breaks?

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

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