Question Answers
Sahay Sir > Question Answers
Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of earth is g and that on the surface of the new planet is g’ then
29
Aug
Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of earth is g and that on the surface of the new planet is g’ then A spherical planet has a mass Mp [...]
A smooth semicircular wire-track of radius R is fixed in a vertical plane. One end of a massless spring of natural length 3R/4 is attached to the lowest point O of the wire-track. A small ring of mass m, which can slide on the track, is attached to the other end of the spring. The ring is held staionary at point P such that the spring makes an angle of 60 with the vertical. The spring constant K=mg/R. Consider the instant when the ring is released, and (i) draw the free body diagram of the ring, (ii) determine the tangential acceleration of the ring and the normal reaction.
29
Aug
A smooth semicircular wire-track of radius R is fixed in a vertical plane. One end of a massless spring of natural length 3R/4 is attached to the lowest point O of the wire-track. A small ring of mass m, which can slide on the track, is attached to the other end of the spring. The [...]
A spherical planet has a mass Mp and diameter Dp . A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity equal to:
29
Aug
A spherical planet has a mass Mp and diameter Dp . A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity equal to: A spherical planet has a mass Mp and diameter Dp . A particle of mass m falling freely near the surface of [...]
The height at which the weight of a body becomes 1/16th, its weight on the surface of earth (radius R), is
29
Aug
The height at which the weight of a body becomes 1/16th, its weight on the surface of earth (radius R), is is its weight on the surface of earth (radius R) The height at which the weight of a body becomes 1/16th August 29, 2020 Category: Chapter 12 - Gravitation , NEET Last 32 Years [...]
A satellite of mass m is orbiting the earth (of radius R) at a height h from its surface. The total energy of the satellite in terms of g0, the value of acceleration due to gravity at the earth’s surface, is
29
Aug
A satellite of mass m is orbiting the earth (of radius R) at a height h from its surface. The total energy of the satellite in terms of g0, the value of acceleration due to gravity at the earth’s surface, is A satellite of mass m is orbiting the earth (of radius R) at a [...]
Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by
29
Aug
Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by Starting from the centre of the earth having radius R the variation of g (acceleration due to gravity) is shown by August 29, 2020 Category: Chapter 12 - Gravitation , NEET Last 32 Years [...]
The ring M1 and block M2 are held in the position shown in Fig.6.176. Now the system is released. If M1 >M2 . find V1 /V2 when the ring m1 slides down along the smooth fixed vertical rod by the distance h.
29
Aug
The ring M1 and block M2 are held in the position shown in Fig.6.176. Now the system is released. If M1 >M2 . find V1 /V2 when the ring m1 slides down along the smooth fixed vertical rod by the distance h. A block of mass M is connected with a particle of mass [...]
At what height from the surface of earth the gravitation potential and the value of g are −5.4 × 10^7 J kg^−2 and 6.0 ms^−2 respectively? Take the radius of earth as 6400 km.
29
Aug
At what height from the surface of earth the gravitation potential and the value of g are −5.4 × 10^7 J kg^−2 and 6.0 ms^−2 respectively? Take the radius of earth as 6400 km. At what height from the surface of earth the gravitation potential and the value of g are −5.4 × 10^7 J [...]
In Fig. a ball of mass m1 and a block of mass m2 are joined together with an inextensible string. The ball can slide on a smooth horizontal surface. If v 1 and v 2 are the respective speeds of the ball and the block, then determine the constraint relation between the two.
29
Aug
In Fig. a ball of mass m1 and a block of mass m2 are joined together with an inextensible string. The ball can slide on a smooth horizontal surface. If v 1 and v 2 are the respective speeds of the ball and the block, then determine the constraint relation between the two. [...]
At what height from the surface of earth the gravitation potential and the value of g are −5.4 × 10^7 J kg^−2 and 6.0 ms^−2 respectively? Take the radius of earth as 6400 km.
29
Aug
At what height from the surface of earth the gravitation potential and the value of g are −5.4 × 10^7 J kg^−2 and 6.0 ms^−2 respectively? Take the radius of earth as 6400 km. At what height from the surface of earth the gravitation potential and the value of g are −5.4 × 10^7 J [...]