Sample Problem

Sample Problem

Shows an arrangement of three particles, particle I having mass m, = 6.0 kg and particles 2 and 3 having mass nl2 = nil = 4.0 kg, and with distance a = 2.0 cm.

SOLUTION: One Key Idea here is that. because we have particles, the magnitude of the gravitational force on particle I due to either of the other particles.

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To determine the directions of we use this Key Idea: Each force on particle I is directed toward the particle responsible for that force. Thus is directed in the positive direction of and has only the)component  Similarly.

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CHECKPOINT 2: The figure shows four arrangements of three particles of equal masses. (a) Rank the arrangements according to the magnitude of the net gravitational force on the particle labeled m, greatest first. (b) In arrangement 2, is the direction of the net force closer to the line of length d or to the line of length.

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