Question 1 :
The time period of a simple pendulum at the center of the earth is:<br/>
Question 2 :
The time period of an earth satellite in circular orbit is independent of:
Question 3 :
If density of earth increases 4 times and its radius becomes half of what it is, our weight will:
Question 4 :
Time period of a satellite in an orbit of radius R is T. Its period of revolution in an orbit of radius 4R will be<br>
Question 5 :
The escape velocity of a body projected vertically upwards from the surface of the earth is 'v' if the body is projected at an angle of $30^o$ with the horizontal, the escape velocity would be
Question 6 :
An artificial satellite moving in a circular orbit around the earth has a total $(kinetic + potential)$ energy $E_{0}$, its potential energy is:
Question 7 :
The time period of revolution of satellites is T. The kinetic energy of the satellite is proportional to
Question 8 :
If the radius of earth decreases by $10\%$, the mass remaining unchanged, then the acceleration due to gravity<br>
Question 10 :
<u></u>A satellite is revolving near the earth's surface. Its orbital velocity is<br>
Question 11 :
For a satellite escape velocity is 11 km/s. If the satellite is launched at an angle of $60^{0}$ with the vertical, then escape velocity would be <br>
Question 12 :
The escape velocity on a planet is $v$. If the radius of the planet contracts to ${\dfrac{1}{4}}^{th}$ of present value without any change in its mass, the escape velocity will be<br>
Question 13 :
A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energies is<br>
Question 14 :
As a body moves from the equator to the poles, the value of g experienced by the body
Question 15 :
The angular velocity of the earth with which it has to rotate so that the acceleration due to gravity on $60^{\circ}$ latitude becomes zero is<br>
Question 16 :
To have an earth synchronous satellites it should be launched at the proper height moving from
Question 18 :
A man weighs $75 kg$ on the surface of the earth. His weight in a geostationary satellite is:<br/>
Question 19 :
Two satellites of masses $50 kg$ and $100 kg$ revolve around the earth in circular orbit of radii $9R$ and $16 R$ respectively, where R is the radius of the earth. The speeds of the two satellites will be in the ratio<br/>
Question 20 :
When the velocity of a satellite increases, its kinetic energy increases. The satellite nowt revolves in an orbit of