If the radius of the earth were to shrink by one percent its mass remaining the same, the acceleration due to greavity on the earth's surface would
Connecting you to a tutor in 60 seconds.
Get answers to your doubts.
Choose the correct alternative:(a) If the zero of potential energy is at infinity, the total energy of an orbiting satellite is negative of its kinetic / potential energy.(b) The energy required to launch an orbiting satellite out of earths gravitational influence is more/less than the energy required to project a stationary object at the same height (as the satellite) out of earths influence.
Why does a black of wood held under water rise to the surface when released?
Buoyant Force is the upward force that acts in the direction opposite to that of weight.Type 1 for true and 0 for false
Draw g' versus dandg′ versus h graph. Here, 'd' is depth below the surface of earth and h is the height from the surface of earth.
The escape velocity of a sphere of mass m is given by (G= univesal gravitational constant, Me= mass of the earth and Re= radius of the earth)
A rocket is fired 'vertically' from the surface of mars with a speed of 2 kms−1. If 20% of its initial energy is lost due to martian atmospheric resistance, how far (in km) will the rocket go from the surface of mars before returning to it ? Mass of mars = 6.4×1023 kg; radius of mars = 3395 km; G=6.67×10−11 Nm2kg−2.
What is Archimedes principle ?