Question

I am in the need of some gravitation topic problems

Answer 1

is gravitational force a pseudo force?

Answer 2

what is pseudo force?

Answer 3

Gravitational force is much diff. from pseudo force acc. to me

Answer 4

i thought i made a question ans was expecting an answer :) well pseudo force is a fictional force generally used to balance a system under consideration (pseudo force is used in non inertial frame of reference)

Answer 5

fictitious force.. (pseudo force..)

gravitational force : Every body attracts another body towards itself. this is called gravitational foce

Answer 6

Sorry ghazi, i didn't remember that perfectly

Answer 7

G = universal gravitational constant = 6.673 * \(10^{-11}\) N\(m^2kg^{-2}\)

Answer 8

\(\large{F=\frac{G *M*m}{R^2}}\)
F= gravitational force
M = mass of body
m = mass of obj.
R = distance between them.

Answer 9

according to me if i'll take an example of free fall like someone is standing inside a lift that is falling freely then there is no gravitational force can be experienced by that guy so it is the only case in which gravitational forces can be proven as pseudo force for the person who is standing outta lift..and seeing that lift in a non inertial frame of reference :)

Answer 10

Well yes, in the case of free fall there will be no force being applied on the man(obj.) the pseudo force is gravitational force

Answer 11

One question to you
:Two objects of different masses falling freely near the surface of moon would
(a) have same velocities at any instant
(b) have different accelerations
(c) experience forces of same magnitude
(d) undergo a change in their inertia

Answer 12

it could be noted that a freefalling observer in a closed box would not be able to detect the force of gravity; hence, freefalling reference frames are equivalent to an inertial reference frame (the equivalence principle).

Answer 13

a) is right acc. to me what is your opinion??

Answer 14

u there?

Answer 15

If no air resistance is present, the rate of descent depends only on how far the object has fallen, no matter how heavy the object is. This means that two objects will reach the ground at the same time if they are dropped simultaneously from the same height. This statement follows from the law of conservation of energy and has been demonstrated experimentally by dropping a feather and a lead ball in an airless tube...

Answer 16

so m i right

Answer 17

A true free fall was demonstrated on the moon by astronaut David Scott on August 2, 1971. so i believe it's A

Answer 18

Your answer seems to be present here :)
http://www.physlink.com/education/askexperts/ae6.cfm

http://wiki.answers.com/Q/Discuss:Do_heavy_things_fall_faster_than_lighter_things