Question

Last year Leah climbed Mt. McKinley (elevation 6200 m above sea level). Her weight at sea level is 70 kg. By how many newtons did her weight change when she went from sea level to the top of Mt McKinley? (The mean radius of the Earth is 6.38 × 106 m.)

A) 3.8 N    B) 1.3 N       C) 4.2 N       D) 0.7 N      E) 1.6 N

Answer 1

sol": Moss of lean on lear on earth surfare (m) = 70 kg Radius of Earth (RF) = 6038 Xin reynt from the poound (h) = 6200 m. Graritafton il force surfere force of of Earth Earth 3 FG = G Mem = mg. R2- Gravitation force at a height h fa= GHEM - G Hem (Reth 12 Ex 2 is Re2th 72 Re E faz mq. {1+th] or faz Hq 81 - 22 UP D o change in Gravitation force is fá fu = My - Hq [i-pale] fa-fu- 2 Hq n = 2X 70 X 908X 6200 - Re 6.38 X 106 - furfu = 1:30. Ane option B i please rate r Correl. the answer