What is the Decrease in Weight of a Body of Mass 500 Kg When It is Taken into a Mine of Depth 1000 Km? - HSC Science (Electronics) 12th Board Exam - Physics
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What is the decrease in weight of a body of mass 500 kg when it is taken into a mine of depth 1000 km? (Radius of earth R = 6400 km, g = 9.8 m/s2)
Date : m = 500kg
d = 1000 km
R = 6400 km
g = 9.8 m/s2
`Wd = m xx gd = "mg" ((R-d))/R`
`gd = g(R-d)/d`
`= (9.8(6400 - 1000))/6400`
= `9.8 xx 0.843`
gd = 8.268 m/s
Wd = m x gd
= 500 x 8.268
Wd = 4134.3 N
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Solution What is the Decrease in Weight of a Body of Mass 500 Kg When It is Taken into a Mine of Depth 1000 Km? Concept: Acceleration Due to Gravity and Its Variation with Altitude and Depth.