MyQuestionIcon

1

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

Potential Energy of an Object at a Height

An object is ...

Question

An object is propelled vertically to a maximum height of 4R from the surface of a planet of radius R and mass M. The speed of object when it returns to the surface of the planet is

A

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A

$\frac{- G M m}{5 R} + 0 = \frac{- G M m}{R} + \frac{1}{2} m v^{2} V = 2 \sqrt{\frac{2 G M}{5 R}}$

Suggest Corrections

thumbs-up

0

Similar questions

Q. An object is propelled vertically to a maximum height of 4R from the surface of a planet of radius R and mass M. The speed of object when it returns to the surface of the planet is.

Q. From a planet of mass

16 M

4 R

, we wish to send an object to its moon of mass

M

R

. Distance between centres of planet and moon is

10 R

. Minimum speed at which object should be projected from the surface of planet so that it reaches moon is (Assume that the planet and the moon are at rest)

Q. From a planet of mass

16 M

4 R

, we wish to send an object to its moon of mass

M

R

. Distance between centres of planet and moon is

10 R

. Minimum speed at which object should be projected from the surface of planet so that it reaches moon is (Assume that the planet and the moon are at rest)

Q. A planet has mass M and radius R. A small object of mass

m

is dropped from a distance of 3R from the planet center. The speed of the object is

\sqrt{k G M / R}

when it hits the surface of the planet. Calculate k.

Q. An object is projected horizontally with speed

\frac{1}{2} \sqrt{\frac{G M}{R}}

, from a point at height

3 R

from surface of earth, where

R

M

is mass of earth, then object will

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Potential Energy

PHYSICS

Watch in App

explore_more_icon

Explore more

Potential Energy of an Object at a Height

Standard X Physics

Join BYJU'S Learning Program

CrossIcon