The value of the gravitational potential at the centre of a ring of r – McqOptions

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1.	The value of the gravitational potential at the centre of a ring of radius “a” and mass “M” is _____
A.	zero
B.	-(G*M)/a
C.	-(G*M)/a1/2
D.	infinite
Answer» C. -(G*M)/a1/2

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