Whgat is the force of gravity on a body of mass 150 kg lying on the surface of the earth? ( Mass of earth = 6×10^24; Radius of earth = 6.4×10^6; G = 6.7×10^Nm^2/ kg^2)
Answers
Answered by
91
force of gravity = mass × acceleration due to gravity
= 150 kg × 9.8 m/s
= 1470 Newton
= 150 kg × 9.8 m/s
= 1470 Newton
ny608855:
But ans 1472 h
9.8 is not the accurate value
to get 1427 as answer,
we have to substitute{ (Gravitational constant × mass of earth) ÷ distance^2 } instead of 9.8 m/s
do it and you will get 1472 as answer
hope it helps
Answered by
81
Answer:
mass=150kg of object
mass of earth=6×10^24 kg
radius=6.4×10^6m
G=6.7×10^11nm^2/kg^2
force=GMm/r^2
f=6.7×10^11×6×10^24×150/(6.4×10^6)^2
as we know,g=GM/r^2=9.8 m per second square
therefore, force=9.8×150
98/10×150=1470 newton
hence 1470 newton is the force applied by the object on the earth.....
1470 newton is the correct answer ......
hope it helps u
plz mark me brilliant....
Explanation:
in the textbook of physics class 9 the ans is given wrong
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