If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth, is
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What is Archimedes principle ?
Construction of submarines is based on
Submarine's lactometers, hydrometers, etc. are designed according to __________.
A plenet moving along an elliptical orbit is closest to the sun at a distance r1 and farthest away at a distance of r2. If v1 and v2 are the linear velocities at these points respectively, then the ratio v2v1 is
A stone is released from the top of a tower of height 19.6m. Calculate its final velocity just before touching the ground.
Write the another name of the buoyant force.
What do you mean by buoyancy ?
A stone is allowed to fall from the top of a tower 100m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25m/s. Calculate when and where the two stones will meet.