A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad ( Ignore the frictional force due to air resistance )
A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad ( Ignore the frictional force due to air resistance )
Text Solution
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The two forces acting on the rocket are the force of gravity, which pulls the rocket towards the ground, and the force of friction due to earth.s atmosphere, which opposes its motion.
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A rocket has been fired upwards to launch a satellite in its orbits. Name the two forces act ing on the rocket immediately after leaving the launching pad.
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Knowledge Check
Once a satellite has been launched into orbit, the only force governing its motion is the force of ______ .
Once a satellite has been launched into orbit, the only force governing its motion is the force of ______ .
A
gravity
B
elasticity
C
friction
D
fuel driven
Once a satellite has been launched into orbit, the only force governing its motion is the force of ______ .
Once a satellite has been launched into orbit, the only force governing its motion is the force of ______ .
A
A) gravity
B
B) elasticity
C
C) friction
D
D) fuel driven
The satellites when launched from the earth are not given the orbital velocity initially, a multistage rocket propeller carries the spacecraft up to its orbit and during each stage rocket has been fired to increase the velocity to acquire the desired velocity for a particular orbit. The last stage of the rocket brings the satellite in circular/elliptical (desired) orbit. Consider a satellite of mass 150 kg in a low circular orbit. In this orbit, we cannot neglect the effect of air drag. This air opposes the motion of satellite and hence the total mechanical energy of earth-satellite system decreases. That means the total energy becomes more negative and hence the orbital radius decreases which causes the increase in KE When the satellite comes in the low enough orbit, excessive thermal energy generation due to air friction may cause the satellite to burn up. Based on the above information, answer the following questions. If due to air drag, the orbital radius of the earth decreases from R to R-/_\R, /_\Rlt ltR , then the expression for increase in the orbital velocity /_\v is
The satellites when launched from the earth are not given the orbital velocity initially, a multistage rocket propeller carries the spacecraft up to its orbit and during each stage rocket has been fired to increase the velocity to acquire the desired velocity for a particular orbit. The last stage of the rocket brings the satellite in circular/elliptical (desired) orbit. Consider a satellite of mass 150 kg in a low circular orbit. In this orbit, we cannot neglect the effect of air drag. This air opposes the motion of satellite and hence the total mechanical energy of earth-satellite system decreases. That means the total energy becomes more negative and hence the orbital radius decreases which causes the increase in KE When the satellite comes in the low enough orbit, excessive thermal energy generation due to air friction may cause the satellite to burn up. Based on the above information, answer the following questions. If due to air drag, the orbital radius of the earth decreases from R to R-/_\R, /_\Rlt ltR , then the expression for increase in the orbital velocity /_\v is
A
`(/_\r)/2 sqrt((GM)/R^3)`
B
`-(/_\R)/2 sqrt((GM)/2)`
C
`/_\R sqrt((GM)/(R^(3)))`
D
`-/_\Rsqrt((GM)/(R^(3)))`
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The satellites when launched from the earth are not given the orbital velocity initially, a multistage rocket propeller carries the spacecraft up to its orbit and during each stage rocket has been fired to increase the velocity to acquire the desired velocity for a particular orbit. The last stage of the rocket brings the satellite in circular/elliptical (desired) orbit. Consider a satellite of mass 150 kg in a low circular orbit. In this orbit, we cannot neglect the effect of air drag. This air opposes the motion of satellite and hence the total mechanical energy of earth-satellite system decreases. That means the total energy becomes more negative and hence the orbital radius decreases which causes the increase in KE When the satellite comes in the low enough orbit, excessive thermal energy generation due to air friction may cause the satellite to burn up. Based on the above information, answer the following questions. It has been mentioned in the passage that as r decreases, E decreases but K increases. The increase in K is [ E = total mechanical energy, r = orbital radius, K= kinetic energy ]