Two bodies of mass m and 9 m are placed at a | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Let the point $P$ be the neutral point where the gravitational field is zero. Let $r_1$ be the distance from mass $m$ and $r_2$ be the distance fr

Vedclass · Accepted Answer

$-\frac{16 G m}{R}$

Vedclass · Answer

(D) Let the point $P$ be the neutral point where the gravitational field is zero. Let $r_1$ be the distance from mass $m$ and $r_2$ be the distance from mass $9m$.The condition for zero gravitational field is:$\frac{G m}{r_1^2} = \frac{G (9m)}{r_2^2}$$\frac{1}{r_1^2} = \frac{9}{r_2^2} \implies \frac{r_2}{r_1} = 3 \implies r_2 = 3 r_1$Since $r_1 + r_2 = R$,we have $r_1 + 3 r_1 = R \implies 4 r_1 = R \implies r_1 = \frac{R}{4}$ and $r_2 = \frac{3R}{4}$.The gravitational potential $V$ at point $P$ is the sum of potentials due to both masses:$V = -\frac{G m}{r_1} - \frac{G (9m)}{r_2}$$V = -\frac{G m}{R/4} - \frac{9 G m}{3R/4}$$V = -\frac{4 G m}{R} - \frac{36 G m}{3R} = -\frac{4 G m}{R} - \frac{12 G m}{R}$$V = -\frac{16 G m}{R}$

Two bodies of mass $m$ and $9 m$ are placed at a distance $R$. The gravitational potential on the line joining the bodies where the gravitational field equals zero,will be ($G=$ gravitational constant):

Similar Questions

If three particles each of mass $M$ are placed at the corners of an equilateral triangle of side $a$,the potential energy of the system and the work done if the side of the triangle is changed from $a$ to $2a$,are

$A$ stationary body on the surface of the Earth has negative potential energy. What does this indicate?

Gravitational potential difference between the surface of a planet and a point situated at a height of $20\,m$ above its surface is $2\,J/kg$. If the gravitational field is uniform,then the work done in taking a $5\,kg$ body to a height of $4\,m$ above the surface will be ........ $J$.

The potential energy of a satellite of mass $m$ revolving at a height $R_e$ above the surface of the Earth,where $R_e$ is the radius of the Earth,is:

Compare the gravitational potential at the center $O$ for the given arcs,each having mass $M$ and radius $R$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module