Chapter 10 – Gravitation
Two satellites A and B of the same mass are revolving around the earth in the concentric circular orbits such that the distance of satellite B from the centre of the earth is thrice as compared to the distance of the satellite A from the centre of the earth. The ratio of the centripetal force acting on B as compared to that on A is
13
Sep
Two satellites A and B of the same mass are revolving around the earth in the concentric circular orbits such that the distance of satellite B from the centre of the earth is thrice as compared to the distance of the satellite A from the centre of the earth. The ratio of the centripetal force [...]
A planet is revolving around the sun as shown in elliptical path. the correct option is
13
Sep
A planet is revolving around the sun as shown in elliptical path. the correct option is A planet is revolving around the sun as shown in elliptical path. the correct option is September 13, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 10 - Gravitation ,
Figure shows two shells of masses m1 and m2. The shells are concentric. At which point, a particle of mass m shall experience zero force?
13
Sep
Figure shows two shells of masses m1 and m2. The shells are concentric. At which point, a particle of mass m shall experience zero force? a particle of mass m shall experience zero force? Figure shows two shells of masses m1 and m2. The shells are concentric. At which point September 13, 2020 Category: Cengage [...]
In the solar system, the Sun is in the focus of the system for Sun-earth binding system. Then the binding energy for the system will be [given that radius of the earth’s orbit around the Sun is 1.5×10^11m and mass of the earth = 6×10^24kg]
13
Sep
In the solar system, the Sun is in the focus of the system for Sun-earth binding system. Then the binding energy for the system will be [given that radius of the earth’s orbit around the Sun is 1.5×10^11m and mass of the earth = 6×10^24kg] A rocket is launched vertically from the surface of earth [...]
The earth moves around the Sun in an elliptical orbit as shown in the given figure. The ratio OA/OB=x. The ratio of the speed of the earth at B to that at A is nearly:
13
Sep
The earth moves around the Sun in an elliptical orbit as shown in the given figure. The ratio OA/OB=x. The ratio of the speed of the earth at B to that at A is nearly: The earth moves around the Sun in an elliptical orbit as shown in the given figure. The ratio OA/OB=x. The [...]
Two satellites of masses m1 and m2 (m1>m2) are revolving around the earth in a circular orbit of radii r1 and r2 (r1>r2), respectively. Which of the following statements is true regarding their speeds v1 and v2?
13
Sep
Two satellites of masses m1 and m2 (m1>m2) are revolving around the earth in a circular orbit of radii r1 and r2 (r1>r2), respectively. Which of the following statements is true regarding their speeds v1 and v2? respectively. Which of the following statements is true regarding their speeds v1 and v2? Two satellites of masses [...]
The value of g at a particular point is 10ms^−2. Suppose the earth shrinks uniformly to half of its present size without losing any mass. The value of g at the same point (assuming that the distance of the point from the centre of the earth does not change) will now be
13
Sep
The value of g at a particular point is 10ms^−2. Suppose the earth shrinks uniformly to half of its present size without losing any mass. The value of g at the same point (assuming that the distance of the point from the centre of the earth does not change) will now be A rocket is [...]
A solid sphere of uniform density and radius R applies a gravitational force of attraction equal to F1 on a particle placed at a distance 2R from the centre of the sphere. A spherical cavity of radius R/2 is now made in the sphere as shown in the figure. The sphere with the cavity now applies a gravitational force F2 on the same particle. The ratio F1/F2 is
13
Sep
A solid sphere of uniform density and radius R applies a gravitational force of attraction equal to F1 on a particle placed at a distance 2R from the centre of the sphere. A spherical cavity of radius R/2 is now made in the sphere as shown in the figure. The sphere with the cavity now [...]
A body is released from a point of distance R’ from the centre of the earth. Its velocity at the time of striking the earth will be (R′>Re).
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Sep
A body is released from a point of distance R’ from the centre of the earth. Its velocity at the time of striking the earth will be (R′>Re). A body is released from a point of distance R' from the centre of the earth. Its velocity at the time of striking the earth will be [...]
Two bodies of masses M1 and M2 are placed at a distance R apart. Then at the position where the gravitational field due to them is zero, the gravitational potential is
13
Sep
Two bodies of masses M1 and M2 are placed at a distance R apart. Then at the position where the gravitational field due to them is zero, the gravitational potential is the gravitational potential is Two bodies of masses M1 and M2 are placed at a distance R apart. Then at the position where the [...]