A space traveler about to leave for the moon has a spring balance and a 1.00kg m

Question

A space traveler about to leave for the moon has a spring balance and a 1.00kg mass A, which when hung on the balance on the Earth gives the reading of 9.80 Newtons. Arriving at the moon at a place where the acceleration of gravity is not known exactly but has a value of about 1/6 the acceleration of gravity at the Earth?s surface, he picks up a stone B which gives a reading of 9.80 Newtons when weighed on the spring balance. He then hangs A and B over a pulley as shown in the figure and observes that B falls with an acceleration of 1.20 m/s2. What is the mass of stone B?

Explanation / Answer

Mb * (1/6)*9.8 = 9.8 N Mb = 1 kg

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