physics-9-chapter-4-turning-effect-of-force-6


1. What is ‘r’ in the formula: F = [G (m x Me)] / r2?



2. Gravitational force is a ...................force?




3. What is the force of earth called that is acting on the body whether the body is in contact with the Earth or not?




4. Where the gravitational field exists?




5. Find the value of g due to the Earth at geostationary satellite. The radius of the geostationary orbit is 48700 km?




6. Where the gravitational field does not exist?




7. What is the direction of gravitational field around the Earth?




8. In the gravitational field of the Earth, what is the gravitational force per unit mass called?




9. The value of which of the following at any point is equal to the value of ‘g’ at that point?




10. The value of which of the following at any point is equal to the value of gravitational field strength at that point?




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