Differentiate between gravitational constant'G' and acceleration due to gravity'g'.
Answers
+
Home Q & A Forum
Academic Questions And Answers Forum
View all questions
Syeda answered 1 year(s) ago
What is difference between 'g' and 'G'
What is difference between 'g' and 'G'
Class-IX Physics
person
Asked by Himanshu
Sep 20
53 Likes
133392 views
editAnswer
Like
Follow
4 Answers
Top Recommend
|
Recent
person
Amarnathreddy , SubjectMatterExpert
Member since Jul 09 2013

G stands for Newton's universal gravitational constant, whereas g stands for the acceleration due to gravity at a certain point. G = 6.67300 × 10-11 N.m2.kg-2, G is a constant throughout space and time and it is a scalar quantity. g = 9.8 m.s-2, g is acceleration due to gravity which is a variable quantity and a vector qualtity. According to Newton's law of universal gravitation the force of attraction between two bodies is given by F = GMm/r2 ---------- (i) From Newton's second law of motion the weight of a body of mass m is F = mg -----------------(ii) From (i) and (ii) mg = GMm/r2 or g = GM/r2 Note: g is a constant at a given location, which depends upon M and r.
G = 6.67300 × 10-11 N.m2.kg-2, G is a constant throughout space and time and it is a scalar quantity.
g = 9.8 m.s-2, g is acceleration due to gravity which is a variable quantity and a vector qualtity.
According to Newton's law of universal gravitation the force of attraction between two bodies is given by
F = GMm/r2 ---------- (i)
From Newton's second law of motion the weight of a body of mass m is
F = mg -----------------(ii)
From (i) and (ii)
mg = GMm/r2
or
g = GM/r2
Note:
g is a constant at a given location, which depends upon M and r.