Medical Sample papers

# Gravitation Problems ## Gravitation Practice Paper

 Question 1
The radius and mass of earth are increased by 0.5%. Which of the following statements are true at the surface of the earth
 A Escape velocity will remain unchanged B g will decrease C g will increase D Potential energy will remain unchanged
 Question 2
A satellite S is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of earth
 A The angular momentum of S about the centre of the earth changes in direction but its magnitude remains constant B The acceleration of S is always directed towards the centre of the earth C The total mechanical energy of S varies periodically with time D The linear momentum of S remains constant in magnitude
 Question 3
A mass M is split into two parts, m and (M–m), which are then separated by a certain distance. What ratio of m/M maximizes the gravitational force between the two parts
 A 1/3 B 1/2 C 1/5 D 1/4
 Question 4
A geostationary satellite orbits around the earth in a circular orbit of radius 36000 km. Then, the time period of a satellite orbiting a few hundred kilometres above the earth’s surface (REarth = 6400 km) will approximately be
 A 1/2 h B 1 h C 2 h D 4 h
 Question 5
If the radius of the earth were to shrink by 1% its mass remaining the same, the acceleration due to gravity on the earth's surface would
 A Increase by 2% B Decrease by 2% C Remain unchanged D Increase by 1%
 Question 6
If the distance between the earth and the sun becomes half its present value, the number of days in a year would have been
 A 64.5 B 182.5 C 730 D 129
 Question 7
A body of mass m is taken from earth surface to the height h equal to radius of earth, the increase in potential energy will be
 A ½ mgR B 2 mgR C ¼ mgR D mgR
 Question 8
A satellite is launched into a circular orbit of radius R around the earth. A second satellite is launched into an orbit of radius (1.01)R. The period of the second satellite is larger than that of the first one by approximately
 A 1.5% B 0.5% C 1.0% D 3.0%
There are 8 questions to complete. 