First slide

Gravitaional potential energy

Question

The gravitational potential due to earth at infinite distance from it is zero. Let the gravitational potential at a point P be -5 J k $g^{- 1}$ . Suppose, we arbitrarily assume the gravitational potential at infinity to be +10 J k $g^{- 1}$ , then the gravitational potential at P will be

Moderate

A

$- 51 k g^{- 1}$
B

$+ 5 J k g^{- 1}$
C

$- 151 k g^{- 1}$
D

$+ 15 J k g^{- 1}$

Solution

According to the problem, as the potential at $\infty$ increases by +10 J kg-1, hence potential will increase by the same amount everywhere (potential gradient will remain constant). Hence, potential at point P = 10 - 5 = + 5J k $g^{- 1}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App