Question
Tue December 05, 2017 By: Apurwa Minj

The acceleration due to gravity of that planet whose mass and radius are half those of earth, will be (g is acceleration due to gravity at earth's surface) (a)2g (b)g (c)g/2 (d)g/4 Answer is: (a)2g

Expert Reply
Gajendra
Wed December 06, 2017
M subscript p equals 2 M subscript e
R subscript p equals 2 R subscript e


g e equals fraction numerator G M subscript e over denominator R subscript e squared end fraction

g subscript p equals fraction numerator G M subscript p over denominator R subscript p squared end fraction equals fraction numerator G 2 M subscript e over denominator left parenthesis 2 R subscript e right parenthesis squared end fraction equals fraction numerator 2 G M subscript e over denominator 4 R subscript e squared end fraction equals g subscript e over 2

o p t i o n space c
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