3. How distance between two objects affects the pull of gravity?
A. the lesser the distance, the lesser the gravitational pull between them
B. the greater the distance, the lesser the gravitational pull between them
C. the greater the distance, the greater the gravitational pull between them
D. none of these, gravitational pull between them depends on their weights
4. What is true about mass and gravity?
A. the lesser the mass of the object, the greater the pull of gravity
B. the greater the mass of the object, the lesser the pull of gravity
C. the greater the mass of the object, the greater the pull of gravity
D. none of these, gravity and mass are not related
5. Where is the gravitational force directed when you are holding a glass?
A. upward
C. into the glass
B. downward
D. away from the glass
6. If the mass of the Earth is doubled, how much increase would the weight of the objects on
Earth be?
A. halved
C. thrice
B. doubled
D. remains the same
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Answers & Comments
Answer:
3. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them. This means that the force of gravity increases with mass, but decreases with increasing distance between objects.
4. the lesser the mass of the object, the greater the pull of gravity. ... the greater the mass of the object, the lesser the pull of gravity. c. the greater the mass of the object, the greater the pull of gravity.
5. Explanation: Instead of "you" trying to push the block, gravity is trying to move the glass parallel to the surface of your fingers. And friction causes an opposing force parallel to the surface of your fingers against the glass.
6. Doubling the mass of the Earth would double your weight, since gravitational force is directly proportional to mass, but doubling the radius (which doubles if the diameter doubles) would decrease your weight by a factor of 1/4, since gravitational force is inversely proportional to the square of the radius.
3. d 4. c 5. b 6. a
Explanation:
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