Two stars each of one solar mass `(= 2 xx 10^(30) kg)` are approaching each other for a head on collision. When they are a distance `10^9` km, their speeds are negligible. What is the speed with which they collide ? The radius of each star is 10^4 km. Assume the stars to remain undistorted until they collide. (Use the known value of G).
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Three masses of 1 kg, 6 kg and 3 kg are connected to each other with threads and are placed on a table as shown in figure. What is the accelration with which the system is moving? Take g=10ms^(-2) :
Two balls, each of m ass 80 g, moving towards each other with a velocity 5 msA^(1) , collide and rebound with the sam e speed. What will be the im pulse o f force on each ball due to the oth er ? W hat is th e valu e of mom entum of each ball
Let us assume that our galaxy consists of 2.5 x× 10^(11) stars each of one solar mass. How long will a star at a distance of 50,000 ly from the galactic centre take to complete one revolution? Take the diameter of the Milky Way to be 10^(5) ly.
Two billiard balls each of mass 0.05 kg moving in opposite directions with speed 6 m s^(-1) collide and rebound with the same speed. What is the impulse imparted to each ball due to the other ?
Two billiard balls each of mass 0.05 kg moving in opposite directions with speed 6 ms-1 collide and rebound with the same speed. What is the impulse imparted to each ball due to the other ?
Two billiard balls each of mass 0 .05 kg moving in opposite directions with speed 6 ms^(-1) collide and rebound with the same speed What is the impulse imparted to each ball due to the other ?
At what height from the surface of earth the gravitation potential and the value of g are - 5.4 xx 10^(7) J kg^(-2) and 6.0 ms^(-2) respectively ? Take the radius of earth as 6400 km :
Places A and B are 100 km apart from each other on a highway. A car starts from A and another from B at the same time. If they move in the same direction, they meet in 10 hours, but if they move towards each other they meet in 1 hour 40 minutes. Find the speeds of the cars.
At what height from the surface of earth the gravitation potential and the value of g are - 5.4 xx 10^(+7) JKg^(-2) and 6.0 ms^(-2) respectively ? Take the radius of earth as 6400 km.
KUMAR PRAKASHAN-GRAVITATION-QUESTIONS PAPER Section - C
