10. Two concentric shells of uniform densityhaving masses M1 and M2 are situated

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10. Two concentric shells of uniform densityhaving masses M1 and M2 are situated as shown inhttp://i903.photobucket.com/albums/ac234/dab3189/Examplech14.jpg
Find the force on a particle of mass m when the particle is locatedat
(a) r = a,
(b) r = b, and
(c) r = c. The distance r is measured from the center of theshells.

Please could someone help explain how to solve this problem.

Thank you :) 10. Two concentric shells of uniform densityhaving masses M1 and M2 are situated as shown inhttp://i903.photobucket.com/albums/ac234/dab3189/Examplech14.jpg
Find the force on a particle of mass m when the particle is locatedat
(a) r = a,
(b) r = b, and
(c) r = c. The distance r is measured from the center of theshells.

Please could someone help explain how to solve this problem.

Thank you :)

Explanation / Answer

a) F = Gm*(M1 + M2)/a2 b) F = Gm*M1/b2 c) F = 0

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