A sonometer wire vibrates with frequency n1 in air under suitable load of specific gravity of . When the load is immersed in water, the frequency of vibration of wire n2 will be .........
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‘g’ is the acceleration due to gravity on the surface of the Earth and ‘R’ is the radius of the
Show that acceleration due to gravity at height ‘h’ above the surface of the Earth is
`gh = g (R/(R+H))^2`
A hole is drilled half way to the centre of the Earth. A body is dropped into the hole. How much will it weigh at the bottom of the hole if the weight of the body on the Earth’s surface is 350 N?
Derive an expression for critical velocity of a satellite revolving around the earth in a circular orbit.
Calculate the density of paraffin oil, if glass capillary of diameter 0.25 mm dipped in paraffin oil of surface tension 0.0245 N/m rises to a height of 4 cm. (Angle of contact of paraffin with glass = 28° and acceleration due to gravity = 9.8 m/s2.)