Saved Bookmarks
| 1. |
Define gravitational potential energy. |
|
Answer» Solution :Potential energy of a body at a point in a gravitational field is the work done by an external agent in moving the body from infinity to that point. ` VEC(E)_("total")= vec(E)_(1)+vec(E)_(2)+vec(E)_(n)= - (Gm_(1))/(r_(1)^(2))hat(R)_(1)-....(Gm_(n))/(r_(n)^(2))hat(r)_(n)` `vec(E)_("total")=sum_(i=1)^(n) (Gm_(i))/(r_(1)^(2)) hat(r)_(i)` |
|