WorksheetsGravitation class 9th
Total questions: 18
Worksheet time: 9mins
Gravitation is the force of ________________
attraction
repulsion
both
none
What is F = Gm1m2/r^2 ?
Newton's Law of gravitation
Newton's first law of motion
Newton's Universal law of gravitation
None
What is the value of G?
6.67X 10-11
6.80X1012
7.97X10-10
NONE
What is the SI unit of G?
Nm2/kg
Nm2/kg2
unitless
none
Gravity is the phenomenon between
Earth and moon
Earth and you
Earth and any object
none
The value of g is
9.8
9.6
8.6
none
If a big stone and a small stone when dropped from a height, then both will strike the ground at the same time bcoz :
the value of g does not depend of mass of object
the value of g depends on mass of object
both a and b
none
The value of g is maximum at
Poles
Equator
both
none
The value of g ___________ as we move above the surface of earth
increases
decreases
constant
none
The value of g is ________ at the center of earth
zero
not defined
1
cant be determined
Fees should be submitted on:
time always
time always
both a and b
all of the above
What is the difference between mass and weight ?( multiple select)
Mass of an object is the quantity of matter contained in it whereas weight of an object is the force with which it is attracted towards the centre of earth
Mass is a vector and weight is scalar
Mass is constant whereas weight is not
SI unit of mass is Kg and SI unit of weight is Newton
What is the mass of an object whose weight is 49 N?
5 kg
6kg
7kg
10kg
Weight of an object on moon is _____________ of the weight on earth
1/6th
1/5th
both a and b
none
Force acting normally on a surface is called :
Pressure
Thrust
Both a and b
none
X = Density of water at 4 0CDensity of substance ,What is X here?
Density
Relative density
Mass
None
When a body is partially or wholly immersed in a liquid ,the upward force acts on it which is called :
Buoyant force
Presure
Area
None
A ship uses which principle:
newton's law
archimedes
both a and b
none
