Gravitation Question 117
Question: A projectile is projected with velocity in vertically upward direction from the ground into the space. ( is escape velocity and . If air resistance is considered to be negligible then the maximum height from the centre of earth to which it can go, will be : (R = radius of earth) [Roorkee 1999; RPET 1999]
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: C
Solution:
Kinetic energy = Potential energy
Þ
Height of Projectile from the earth’s surface = h Height from the centre