Question

A Physics student in a laboratory course is taking a Final Examination. He is given an object whose weight must be determined, but the only instruments that are provided to him are a stopwatch, a spring, and a 4.90-N weight. The student attaches the spring to a support rod so that it is suspended vertically, and then affixes the 4.90-N weight to it. Using the stopwatch, he finds that the system executes twenty complete oscillation cycles in 65.0 sec. Next, he removes the 4.90-N weight from the spring and suspends the unknown mass from it. Setting this new system into motion, he determines that it undergoes twenty full oscillatory cycles in 220.0 sec. Based on this data, compute the weight of the object.

Answer 1

Weight of the object = 56.1325 N

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