Ask Experts Questions for FREE Help !
Ask
    Lekhni Rao's Avatar
    Lekhni Rao Posts: 1, Reputation: 1
    New Member
     
    #1

    Sep 24, 2014, 02:13 AM
    Physics
    What is relation between gravitational potential at surface s centre of earth
    ebaines's Avatar
    ebaines Posts: 12,129, Reputation: 1307
    Expert
     
    #2

    Sep 24, 2014, 04:54 AM
    Hint: assuming the Earth is a homogenous sphere, at any point inside that sphere the gravitational force is proportional to the mass of the sphere that lies closer to the center than that point, divided by the distance from the center of the Earth squared. Potential energy is the integral of that force with respect to dx (distance from the center) integrated over x=0 to x=R. Determine that integral, then figure the constant of integration that makes it consistent with the boundary condition that PE at the surface is -GMm/R_e. From this - what do you get for an expression of PE for a point inside the Earth, and specifically for x=0?

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Physics [ 0 Answers ]

A helium nuclide of massm1 moving with an initial velocity of v0- is incident on a stationary nuclide mass m2. After collision,m1 was deflected through an angled Ѳ and m2 angle of ɸ. If the velocities of the nuclide after collision were v2 and v2 respectively, show that for an elastic collision in...

Physics help!! [ 1 Answers ]

A car is moving at 36m/s when the brakes are suddenly applied. The car slows down to 15m/s in 6.4s. How fast is it moving 3.8s after brakes are applied, assuming constant acceleration?

Physics [ 1 Answers ]

A thread of mercury of length 15cm is used 2 trap some air in a capillary tube with uniform cross sectional area & closed at one end. With the tube vertical & the open end upper most,the length of the trapped air column is 20cm. Calculate,the length of the air column when the tube is held...


View more questions Search