1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

An exoplanet having equal mass and radius one-third of the Earth is discovered by the scientists. Calculate the value of acceleration due to gravity on that exoplanet, if its value on Earth is 'g'.

A
3g
No worries! Weâ€˜ve got your back. Try BYJUâ€˜S free classes today!
B
9g
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
g3
No worries! Weâ€˜ve got your back. Try BYJUâ€˜S free classes today!
D
g9
No worries! Weâ€˜ve got your back. Try BYJUâ€˜S free classes today!
Open in App
Solution

The correct option is B 9gGiven: Acceleration due to gravity on Earth = g Let mass and radius of Earth be 'M' and 'R', respectively, then Mass of exoplanet = M Radius of exoplanet = R3 Now, gearth = GMR2 gexoplanet= GM(R/3)2 Thus, gexoplanet = 9GMR2 gexoplanet = gearth = 9 g

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Kepler's Laws
PHYSICS
Watch in App
Explore more
Join BYJU'S Learning Program