A uniform spheres has a radius of 2 cm. Find the percentage increase in its weight when a second sphere of radius 20 cm and density `12xx10^(3)`kg`m^(-3)` is brought underneath it and nearly touching it. Take `g=9.8ms^(-2)` and G=`6.67xx10^(-11)` SI units.
Topper's Solved these Questions
GRAVITATION
SL ARORA|Exercise Problem From Competitive Examinations|14 Videos
GRAVITATION
SL ARORA|Exercise Exercise|480 Videos
FLUIDS IN MOTION
SL ARORA|Exercise All Questions|117 Videos
HEAT
SL ARORA|Exercise Problem For Self Practice|72 Videos
Similar Questions
Explore conceptually related problems
A uniform solid sphere has radius 0.2 m and density 8xx10^(3)kg//m^(2) . Fing the moment of inertia about the tangent to its surface. (pi=3.142)
A sphere has mass of (20+-0.4)kg and radius of (10+-0.1) m. Find the maximum percentage error in the measurement of density.
A uniform solid sphere has a radius 0.1 m and density 6 xx 10 ^ 3 kg/ m^ 3 . Find the moment of intertia about a tangent to its surface.
A conducting sphere of radius 10 cm is given a charge of +2xx10^(-8)C . What will be its potential?
Assuming the earth to be a uniform sphere of radius 6400 km and density 5.5 g cm^(-3) , find the value of g on its surface . Given G = 6.66 xx 10^(-11) Nm^(2)kg^(-2)
Surface charge density of a conducting sphere of a radius 10 cm is 8.85 xx 10^(-8) c//m^(2) . Potential at the centre of the sphere is
An air bubble of radius 1 cm is found to rise in a cylindrical vessel of large radius at a steady rate of 0.2 cm per second. If the density of the liquid is 1470 kg m^(-3) , find its viscosity. Take g=9.8ms^(-2)
Calculate mass of earth taking it to ne a sphere of radius 6400 km. given g=9.8 m//s^(2) and G=6.67xx10^(-11)N m^(2)kg^(-2)
Assuming the earth of to be a uniform sphere of radius 6400 kg and density 5.5 g//c.c. , find the value of g on its surface G=6.66xx10^(-11)Nm^(2)kg^(-2)
A sphere of radius 7 cm weights 490 g. Calculate its density in S.I. system.
