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WorksheetsChapter 7
Total questions: 10
Worksheet time: 5mins
What type of interaction is a gravitational force?
Attractive and repulsive
Repulsive
Attractive
No interaction exist
An apple is hangs on a tree on the earth, Which of the following statements is correct about the interaction between the apple and the earth?
The force on the apple is greater that the force on the Earth
The force on the apple is equal to the force on the earth
The force on the Earth is larger than the force on the apple
The forces on the apple and the earth are zero because they are not touching each other
Two objects are attracted to one another by a strength of force F. If one mass doubles and the other is tripled, what is the new gravitational force between the objects in terms
of F?
4F
6F
1/9 F
1/6 F
The definition of gravitational field strength is:
The region of space surrounding a charge where other charges will feel an repulsive force due to it.
The region of space surrounding a body where other bodies will feel an repulsive force due to it.
The region of space surrounding a charge where other charges will feel an attractive force due to it.
The region of space surrounding a body where other bodies will feel an attractive force due to it.
Mass of Earth when it's radius is 6400 km and gravitational field strength is 9.81 N kg-1 is
5 × 1023 kg
6.0 × 1024 kg
40 × 109 kg
9 × 1024 kg
As distance increases, value of gravitational field strength
also increases
decreases
remains constant
may increase or decrease
The minimum velocity required to leave the atmosphere is called the...
orbital velocity
ejection velocity
escape velocity
terminal velocity
A geostationary satellite orbits the Earth....
once every 24 hours
once every week
once every 10-11 hours
once every 4 weeks
The earth revolves around the sun with an angular velocity of 2×10-7rad/s in a circular orbit of radius 1.5×108km. The force exerted by the sun on the earth is.....(Mass of earth =6x1024 kg)
36×1021 N
27×1039 N
Zero
18×1025 N
The radius of the earth is 6.38 × 106 m. Find the orbital velocity of a satellite if it orbited 8.50 × 104 m above the surface of the earth.(Mass of earth=6x1024 kg)
6.17 × 1015 m/s
3.49 × 102 m/s
7.87 × 103 m/s
7.28 × 107 m/s
