Force (WORKout questions.)
1.
What
is free fall?
2.
What
is gravity?
3.
What
is the value of “g” at the center of Jupiter? Why?
4.
What
is the value of universal graivitational constant?
5.
Acceleration
due to gravity is 9.8m/s2. Write any two infomations can be obtained
from the statement. Or what do you mean by these statements?
6.
What
is gravitational constant? WRITE it’s SI unit.
7.
Write
the value of g in the equator and polar region.
8.
What
is the relationship between acceleration due to gravity and radius of heavenly
object
9.
What
is acceleration due to gravity?
10.
What
is the value of acceleration due to gravity at the SURFACE OF THE MOON?
11.
Write
the formula to calculate the weight of an object.
12.
What
is gravitational force?
13.
In
what condition acceleration due to gravity on parachute is zero?
14.
State
newton’s law of gravitation.
15.
Do
you think gravitational force between sun and earth is affected by the gravity
of other planets?
16.
What
is the value of acceleration due to gravity on the surface of the Jupiter?
17.
Write
two condition in which the weight of an
object is zero?
18.
Write
the value of the universational gravitational constant? What do you mean by
this value?
19.
Under
what condition universal gravitational
constant becomes equal to the
gravitational force?
20.
Out
of solid and liquid which has more force of gravitation?
21.
When
a coin and feather are dropped together, will they reach to the ground at the
same time?
22.
What is the conclusion of the coin and
feather experiment?
23.
What is weightlessness?
24.
Why
do the satellite does not fall to the ground?
Or, Why satellite does not require
fuel to revolve around earth?
25.
AT
what condition coin and feather fall together?
26.
Write
down the effect of gravity of sun and
moon on ocean and sea?
27.
In
which direction the force of gravity act?
28.
Where
does the force of gravity is maximum on earth?
29.
What
are the factors that affect the f orce of gravitation?
30.
What
is the effect of the gravity on falline object?
31.
In
formula g = GM/R2, what does g, G,M and R mean?
32.
What
is geocentric theory?
33.
What
is heliocentric theory?
34.
What
is force? Write its si unit.
35.
Write
the relationship between gravitational force with mass and distance between the
center of objedccts.
36.
What
will be the gravity of the earth if it is compressed
to the size of the moon?
37.
In
what direction gravitational force works?
38.
By
what force planets revolve around massive objects?
39.
State
newton’s law of gravitation and derive its mathematical expression.
40.
What
is the name given to the force between earth and the object on the earth?
41.
Who
was the first person to calculate the value
of G correctly?
42.
Mention
any two factors that affect the gravity.
43.
Give
an example of gravity.
44.
Write
any two affects of gravity.
45.
Does
the gravity of the earth affect a body in space?
46.
Write
the relationship between gravity with mass and radius of the planet. Derive
mathematical relationship as well.
47.
What
is mass of an object? What is its SI unit?
48.
Which
instrument is used for measuring the mass of a body?
49.
Mention
any two factors on which mass of an object depends.
50.
What
is weight? What is its SI unit?
51.
By
what instrument is the weight of a body is measured?
52.
Mention
any two factors on which the weight of a body depends.
53.
Compare
the weight of an object on the earth and on the moon.
54.
The
bodies in the universe attract each other by virtue of their mass. Who was the
scientist propounded this theory?
55.
What
is the relation between weight and acceleration due to gravity?
56.
What
are the factors that affect acceleration due to gravity.
57.
What
will happen to the acceleration due to gravity if radius of the earth is
decreased.
58.
What
are the factors that affect the acceleration due to gravity in the earth.
59.
What
is the affect of altitude in acceleration due to gravity. Give one example.
60.
How
the value of g changes from polar to equatorial region?
61.
Write
the relation between g and G.
62.
The
acceleration due to gravity of Jupiter is 25m/s2. What does that
mean?
63.
What
force produces acceleration due to gravity on the earth?
64.
What
is the weight of any object on the center of the earth?
65.
What
is the weight of the body during free
fall?
66.
If
you measure your own weight, where you will find maximum and minimum weight in
Nepal? Explain.
67.
Weight
of Ram is 60 Kg. Is this statement correct? Explain.
68.
Explain
the difference between fall of parachute in earth and moon.
69.
In
which condition, acceletarion due to gravity of parachute is zero.
70.
What
is the weightlessness in space?
71.
What
is meant by null points?
72.
What
is gravitational fiend intensity?
73.
What
is Robert Boyle’s view of free fall?
74.
What
is orbital velocity?
75.
Define
excape velocity.
76.
Write
any two difference between mass and weigt.
77.
Mass
is constant but weight is variable. Why?
78.
By
how many times the weight of a body less on the surface of moon than on the
surface of the earth?
79.
Kathmandu
lies at more altitude than Biratnagar. How it will affect acceleration due to
gravity and weight of a body?
80.
A
man travels from Hilly region to Terai region. What will happen to his weight?
81.
Illustrate
that g is inversely proportional to the square of the distance from the center.
82.
Write
the difference between gravity and acceleration due to gravity.
83.
Why
the weight of a body is different in different celestial objects?
84.
What
will be the mass of a object if it has mass 2 kg on earth’s surface?
85.
Astronaut
feel weightlessness in space. Why?
86.
Two
stones, one with 20 kg mass and another with 5 kg mass are dropped together.
Which one will hit the ground first? Why?
87.
Why
atmosphere doesnot escape from earth?
88.
Why
iron ball and feather fall together in vacuum?
89.
Differentiate
between free fall and weightlessness.
90.
Tides
rise on sea but not on our Bucket. Why?
91.
A
stone and paper are dropped on the surface of the moon . What will happen ? Explain.
92.
A
loose paper falls slowly than crumpled one. Why?
93.
Why
do all planets revolve around the sun?
94.
What
happen to the gravitational force between two objects if
i.
Mass
of the both object is doubled.
ii.
Mass
of one object is doubled.
iii.
Mass
of one object is halved.
iv.
Distance
is reduced to half.
v.
Distance
is doubled.
95.
Why
is the newton’s law called universal law?
96.
We
don’t see our friends being pulled by another friend by virtue of gravitational
force only. Explain the reason.
97.
Why
heavier objects do not fall quickly to the surface of the earth?
98.
Two
star has mass X and Y and a is the distance between them. What is the
gravitational force between them?
99.
Why
Gravitational force between any two object in our evberyday’s experience is not
noticed?
100. Although apple and earth both attract
each other, why earth does not move toward apple?
101. If sun’s size is doubled the mass. What would be the resultant force to
the earth from the sun?
102. How the acceleration due to gravity
changes when we go toward the center of the earth? Why the value of g at the
center?
103. Mass of object can’t be measured in
space. Why?
104. Why the change in velocity is observed
when we throw a object upward?
105. You can jump more on the surface of
the moon. Why?
106. Object dropped in pole reaches to the
surface than the object dropped from the equator. Why?
107. Mass is measured by beam balance but
weight is measured by spring banalce. Why?
108. A small hole is made on a cup and
water is filled and cup is allowed to fall freely. Will the water sip from the
hole? Why?
109. Why do we feel uncomfortable when we
move downward in giant wheel?
110. Why G is scalar quantity but g is a
vector quantity?
111. Explain about coin and feather
experiment.
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