Assuming the earth to be a sphere of uniform mass density, how much would a body weigh (in N) half way down to the center of the earth if it weighed 250 N on the surface ?
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The volume of 50 g of a substance is 20 cm3. If the density of water is 1 g cm−3.Find the density of the substance and interpret whether the substance will sink or float?
For a satellite moving in an orbit around the earth, ratio of kinetic energy to potential energy is
Suppose the earth increases its speed of rotation . At what new time period will the weightof a body on the equator becomes zero? Take g=10s2m and radius of the earth R=6400km.
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Infinite number of bodies, each of mass 2kg, are situated on x-axis at distance 1m,2m,4m,8m……… respectively, from the origin. The resulting gravitational potential the to this system at the origing will be
The change in the value of 'g' at a height 'h' above the surface of the earth is the same as at a depth 'd' below the surface of earth. When both 'd' and 'h' are much smaller then the radius of earth, then which one of the following is correct?
Buoyant force exerted by a fluid on a given body is :
In what direction does the buoyant force on an object immersed in a liquid act?