Question

At what height will a man's weight be half his weight as on the surface of earth? (here R is the radius of earth)

A) 0.236 R

B) 0.732 R

C) 0.414 R

D) 0.645 R

Answer 1

@mukushla

Answer 2

\[\frac{m_2g_2}{m_1g_1}=\frac{1}{2}\]

Answer 3

hmn wait...

Answer 4

so I got this...

Answer 5

m i right or m i right? :P

well any mistake there " mukushla "sir""

Answer 6

quite right

Answer 7

Oh k thanks for that sir... @mukushla

Answer 8

no problem kush

Answer 9

acceleration due to gravity at height h from the surface of the earth= (GM/R^2) (1+h/r) ^(-2)

Answer 10

I got it @akash123 thanks

Answer 11

what's the answer....if u dont neglect the higher order terms...if i neglect higher order terms then h=0.25R...but it's not in the options

Answer 12

h = 0.414 R

Answer 13

http://assets.openstudy.com/updates/attachments/5045fb9ae4b068b76c9a5b10-mathslover-1346764275942-answerbymathslover.jpg

Answer 14

so u calculated the sum of series...s=1-2x+3x^2-4x^3...

Answer 15

got it..i was on d wrong track

Answer 16

no problem