GravitationGravitational Acceleration (NEET (NTANational Eligibility cum Medical Entrance Test) Physics): Questions 15  19 of 20
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Question number: 15
» Gravitation » Gravitational Acceleration
Question
If the value of ‘g’ at a height h above the surface of the earth is the same as at a depth x below it, then (both x and h being much smaller than the radius of the earth)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 16
» Gravitation » Gravitational Acceleration
Question
What would be the angular speed of earth, so that bodies lying on equator may experience weightlessness? (g = 10 m/s ^{2} and radius of earth = 6400 km)
Choices
Choice (4)  Response  

a.  1.25 ⨯ 10 ^{2} rad/sec 

b.  1.25 ⨯ 10 ^{1} rad/sec 

c.  1.25 ⨯ 10 ^{4} rad/sec 

d.  1.25 ⨯ 10 ^{3} rad/sec 

Question number: 17
» Gravitation » Gravitational Acceleration
Question
If the radius of the earth were to shrink by 25 % its mass remaining the same, the acceleration due to gravity on the earth’s surface would be given as
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 18
» Gravitation » Gravitational Acceleration
Question
On a planet (whose size is the same as that of earth and mass 6 times to the earth) the energy needed to lift a 2 kg mass vertically upwards through 4 m distance on the planet is (g = l0 m/sec ^{2} on the surface of earth) –
Choices
Choice (4)  Response  

a.  320 J 

b.  480 J 

c.  560 J 

d.  470 J 

Question number: 19
» Gravitation » Gravitational Acceleration
Appeared in Year: 2016
Question
Starting from the centre of the earth having radius , the variation of (acceleration due to gravity) is shown by –
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
