Problem 1.21 Problem 1.21 Two particles have a mass of 7.8 kg and 130 kg, Part A

Question

Problem 1.21 Problem 1.21 Two particles have a mass of 7.8 kg and 130 kg, Part A If they are 800 mm apart, determine the force of gravity acting between them. Express your answer to three significant figures and include the appropriate units. F. Value Units My Answers Give Up Part B Compare this result with the weight of each particle. Find weight of the first particle. Express your answer to three significant figures and include the appropriate units. a Value Units Submit My Answers Che Up Part C Find weight of the second particle Express your answer to three significant figures and include the appropriate units. Signed in as

Explanation / Answer

F= (G*M1*M2)/r^2

where G= 6.67 x 10-11 m3 kg-1 s-2.

F=(6.67 x 10-11*7.8*13)/0.8^2

=-1638.59N

Weight of first particle=W=mg=6.8*9.81=76.518N

weight of second particle=13*9.81=127.53N

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