At the surface of a certain planet, the gravitational acceleration g has a magnitude of 12.0 m/s^2. A 21.0-kg brass bell is transported to this planet. What is (a) the mass of the brass ball on the Earth and on the planet, and (b) the weight of the brass ball on the Earth and on the planet?

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  1. a. M = 21 kg on earth and the planet.

    b. M*g = 21*9.8 = 205.8 N. = Wt. on earth.
    21*12 = 252 N. = Wt. on the planet.

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