Linked Questions

3
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4answers
515 views

If an object is free falling under gravity, then where is the pseudo force applied? [duplicate]

If I am travelling in a train and the train accelerates forward then I experience a pseudo force backward. But if someone is free falling under gravity where does he experience pseudo-force because ...
-1
votes
2answers
6k views

why does a person feel weightless during free fall? [duplicate]

I want to ask why does a person feel weightless during free fall? Please give a specific and clear answer, without making it complex.
2
votes
1answer
2k views

Why can't we feel acceleration under free fall? [duplicate]

It's a common experience when we are in some vehicle like a car being accelerated we can feel the "invisible push/pull" or acceleration caused due to the change in velocity I assume we can always ...
0
votes
6answers
168 views

Acceleration in free fall [duplicate]

A body in free fall "feels" no gravitational force (equivalence). Why does it continue to accelerate. Why is your program refusing my question?
1
vote
3answers
102 views

Equivalence Principle: Why is sitting in space the same as failling in a uniform gravitational field [duplicate]

The equivalence principle states that no experiment can determine whether one is being accelerated or if there is gravity present. This is insightful and intuitive. However, I was sort of surprised. ...
0
votes
3answers
241 views

Does acceleration in free fall disprove Newtonian mechanics? [duplicate]

In Newtonian mechanics, how come the net force on an object in free fall is zero, yet it is accelerating?? If F=(a)(m), and F=0, it follows that: a must equals 0 But in reality a falling object will ...
0
votes
2answers
66 views

Equivalence principle and inertial frames [duplicate]

In Ta-Pei Cheng's Relativity, Gravitation and Cosmology book, he stated the equivalence principle as Physics in a frame freely falling in a gravity field is equivalent to physics in an inertial frame ...
0
votes
2answers
56 views

Why do we feel weightless on zero G planes? [duplicate]

I've heard of zero G flights, but why exactly do we feel weightless when we are in them?
0
votes
1answer
68 views

Why is normal contact force acting on a person in an elevator during a free fall 0? [duplicate]

Since normal contact force between two surfaces depends on molecular interaction between them, then why does its value change with the acceleration of the elevator?
1
vote
3answers
676 views

An inertial frame of reference observes an object on which the total force is zero but still has non-zero acceleration

Imagine a cup stuck to the floor of a falling elevator with the help of some impressive adhesive. In a frame of reference is this cup is being watched through the walls of a transparent elevator, this ...
1
vote
2answers
368 views

Perceived acceleration in an artificially modulated gravitational field

It's intuitive that while accelerating in a locally constant gravitational field, there is no perception of acceleration, since the body accelerates uniformly. What if a body were in a rapidly ...
1
vote
3answers
154 views

Would lifting dumbbell in free falling lift be easier or harder?

Would it be harder to lift a dumb bell in free falling lift, where the dumbbell is falling with us or would it be easier?
1
vote
3answers
278 views

Fictitious force on a free falling body?

So I have read the first answer to this question and I have trouble making sense of the "Newton's explanation" part. If a person was inside a car moving on a straight road with acceleration of $9.8ms^...
0
votes
1answer
223 views

normal force and fictitious force

From this answer https://physics.stackexchange.com/a/196166/147599 I have read that when we are free falling, the fictitious force cancels out the gravity pull so we'll feel no force. Would the ...