mass of a body is 25 kg .what is its weight in newton on earth?the body is carried to a planet whose mass is two times the mass of earth and radius is half that of earth. what will be th as mass and weight of the body on the planet?[take the value of g on earth as 10 ms2
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GIVEN
MASS OF BODY = 25KG
THEN WEIGHT ON EARTH = 25 × 10(G)
= 250 NEWTON
THEN ON OTHER PLANET
M = 2ME(EARTH)
R = 1/2 RE(EARTH)
THEN
g= GM/R×R
= 2GM/R^2/4
= 8GM/R^2
AS GM/R^2 = g OF EARTH
THEREFORE
g OF OTHER PLANET = 8 × 10
= 80M/S^2
NOW
WEIGHT ON OTHER PLANET =
80 × 25
= 2000 NEWTON
MASS OF BODY = 25KG
THEN WEIGHT ON EARTH = 25 × 10(G)
= 250 NEWTON
THEN ON OTHER PLANET
M = 2ME(EARTH)
R = 1/2 RE(EARTH)
THEN
g= GM/R×R
= 2GM/R^2/4
= 8GM/R^2
AS GM/R^2 = g OF EARTH
THEREFORE
g OF OTHER PLANET = 8 × 10
= 80M/S^2
NOW
WEIGHT ON OTHER PLANET =
80 × 25
= 2000 NEWTON
rana2764:
thanks....
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