# Gravitation-Gravitational Acceleration (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 16 - 19 of 20

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 16

» Gravitation » Gravitational Acceleration

MCQ▾

### 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.

b.

c.

d.

## Question number: 17

» Gravitation » Gravitational Acceleration

MCQ▾

### 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

MCQ▾

### 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

MCQ▾

### 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.

f Page