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(b) 2I
(b) [ML ²T– ¹]
(a) Remains same
(d) 125 N
(c) M
(d) GMₘ/6R
(b) √2gR
(d) None the these
(b) decreases
(d) -9Gm/r
The moment of inertia of a ring about one of it’s diameter is I. What will be the moment of inertia about a tangent parallel to the diameter?
(b) 2I
(b) 2I
See lessThe dimension of angular momentum are
(b) [ML ²T– ¹]
(b) [ML ²T– ¹]
See lessIf the earth stop moving around its polar axis, then what will be the effect on the weight of a body placed at the south pole?
(a) Remains same
(a) Remains same
See lessA body weighed 250N on the surface. Assuming the earth to be a sphere of uniform mass density, how much would it weigh half way down to the centre of earth
(d) 125 N
(d) 125 N
See lessIf mass of a body is M on the surface of earth, then the mass of the same body on the moon surface is
(c) M
(c) M
See lessEnergy required to move a satellite of mass m from an orbit of radius 2R to 3R is, (M mass of earth)
(d) GMₘ/6R
(d) GMₘ/6R
See lessA particle falls towards earth from infinity. It’s velocity on reaching the earth would be
(b) √2gR
(b) √2gR
See lessA man weights 60 kg at earth’s surface. At what height above the earth’s surface weight becomes 30 kg. Given radius of earth is 6400 km.
(d) None the these
(d) None the these
See lessWhen a body is taken from poles to equator on the earth, its weight
(b) decreases
(b) decreases
See lessTwo bodies of mass m and 4m are placed at a distance r. The gravitational potential at a point on the line joining them where the gravitational field is zero, is
(d) -9Gm/r
(d) -9Gm/r
See less