2300_les03 - I. Concepts and Definitions H. Review of basic...

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1 lesson 3 I. Concepts and Definitions H. Review of basic physics 1. Mass, force, and work z z = 1000 m z = 0 m A spherical, iron cannon ball of diameter 15.0 cm rests on the surface of the Earth at elevation z = 0.00 m. a) Calculate the mass (kg) of the ball. b) Calculate the force (N) exerted by the cannon ball on the surface. c) Calculate the work (J and kJ) required to raise the cannon ball 1000 m above the surface of the earth (z = 1000 m). lesson 3 I. Concepts and Definitions H. Review of basic physics 1. Mass , force, and work a. Mass of ball From Table A-3, the density of iron, ρ , is 7840 kg/m 3 . The diameter, D, is 0.15 m. The mass, m, is the product of density and volume. kg 85 . 13 2 m 15 . 0 3 4 m kg 7840 2 D 3 4 ) Vol ( m 3 3 3 = = = = π ρ
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2 lesson 3 I. Concepts and Definitions H. Review of basic physics 1. Mass, force , and work b. Force exerted by ball on surface The standard acceleration of gravity, g , from the inside front cover of the text, is 9.81 m/s 2 . Newton's second law, Equation 1-1, p. 6 of the text, defines the force.
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2300_les03 - I. Concepts and Definitions H. Review of basic...

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