### SAT - Science - Physics - Gravitation

#### Question - 1

SI unit of gravitational constant is  ______

• A N m2kg2
• B N m2kg-2
• C N m2s-2
• D N mkg-2

#### Question - 2

What is the value of gravitational constant?

• A 6.6734 x 10-11Nm2/kg2
• B 6.6734 x 10-10Nm2/kg2
• C 6.6734 x 10-11Nm/kg2
• D 6.6734 x 10-11Nm2/kg

#### Question - 3

If the distance between two bodies is doubled, the force of attraction F between them will be ________

• A 1/4F
• B 2F
• C 1/2F
• D F

#### Question - 4

The force of gravitation between two bodies in the universe does not depend on

• A The distance between them
• B The product of their masses
• C The sum of their masses
• D The gravitational constant

#### Question - 5

Name the fundamental force which holds the planets in their orbits around the sun.

• A Gravitational force of attraction
• B Electrostatic force of attraction
• C Nuclear force of attraction
• D Electrostatic force of attraction

#### Question - 6

When an object is thrown up, the force of gravity _____

• A is opposite to the direction of motion
• B is in the same direction as the direction of motion
• C becomes zero at the highest point
• D increases as it rises up

#### Question - 7

What is the final velocity of a body moving against gravity when it attains the maximum height?

• A Zero
• B u2/2g
• C hit
• D 2gh

#### Question - 8

The acceleration due to gravity is zero at __________

• A The equator
• B Poles
• C Sea level
• D The centre of the earth

#### Question - 9

If acceleration due to gravity on earth is 10 m/s2, then the acceleration due to gravity on moon is________

• A 1.66 m/s2
• B 16.6 m/s2
• C 10 m/s2
• D 0.166 m/s2

#### Question - 10

The second equation of motion for a freely falling body starting from rest is ______

• A $h=u+{1\over 2}gt^2$
• B $h=u-{1\over 2}gt^2$
• C $h={1\over 2}gt^2$
• D $h=-{1\over 2}gt^2$