Question

# If a body is projected with a speed lesser than escape velocity, then

A
the body can reach a certain height and may fall down following a straight line path
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
the body can reach a certain height and may fall down following a parabolic path
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
the body may orbit the earth in a circular orbit
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
the body may orbit the earth in an elliptical orbit
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

## The correct options are A the body can reach a certain height and may fall down following a straight line path B the body may orbit the earth in a circular orbit C the body may orbit the earth in an elliptical orbit D the body can reach a certain height and may fall down following a parabolic path(1) if v<ve and the body is projected vertically upwards, the body will rise up to that height where its velocity becomes zero. Afte rthat it will fall freely under force due to gravity following a straight line path.(2) If v<ve but the body is projected at some angle w.r.t. vertical direction, the body will reach upto a certain height (where vertical component of velocity becomes zero)and then fall down following n parabolic path. (This will be a case of projectile motion). (3) if v=ve=√GMR then orbit will be circular. (4) But if v0<v<ve (escape velocity) then orbit will be ellipse. So all the options are correct.

Suggest Corrections
0
Related Videos
Falling Balls in Disguise
PHYSICS
Watch in App