Physics
Mechanics
Easy
Question
If both the mass and radius of the earth decrease by 1%, the value of
- acceleration due to gravity would decrease by nearly 1%
- acceleration due to gravity would increase by 1%
- escape velocity from the earth's surface would decrease by 1%
- the gravitational potential energy of a body on earth's surface will remain unchanged
The correct answers are: acceleration due to gravity would increase by 1%, the gravitational potential energy of a body on earth's surface will remain unchanged
The acceleration due to gravity is .
The new value of g would be 
Thus, g would increase by about 1%. The new escape velocity would be
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