Question

can anyone say if i drop a ball and suddenly the earths gravity vanishes what will happen to the ball? and in an imaginary ideal 0 gravity place how can we measure mass..?

Answer 1

The ball, if the gravity had vanished while it was dropping, would continue to drop but without an acceleration because there was already a velocity for the ball. But if it was before you dropped it, it would hang in mid air.

Answer 2

for you* -the dropper that is...

Answer 3

in a gravityless place, you can measure the inertial mass i.e, you can find mass by apllyinf force on the body and measuring acceleration caused in the direction of force

Answer 4

Mass is not related to gravity in any ways.Its the weight which related which is related to gravity.In addition,till today accepted definition of mass is amount of particles present in a body while it is still not clear till today that is mass dependent on any other thing like gravity or not.

Answer 5

so can u say with what velocity would the ball fall if gravity vanishes after 2 sec ...suppose it falls from a height was 100 metre

Answer 6

v=u+at
v=9.8x2
v=19.6 m/s #

Answer 7

No, lets consider a hypothetical question. Suppose you look at a part of the sky & you see a "an object". Now suppose that there is nothing near it(or any stars behind it so that you cannot observe the "bending" of light)(It is very very far away from any mass).

How do you find the mass of this "object"?

Answer 8

ok...what would happen after it reaches the ground?

Answer 9

the ball will continue moving in same direction with a uniform speed, the speed of ball at the instance gravity vanishes.

Answer 10

It would bounce or stick depending on the material it is made of.

Answer 11

after it hits the ground it wil moves back with a velocity slightly lower than it speed( beacuse nothing is completely elastic) it struck at ground in opposite direction from ground.

Answer 12

and frns i hav another ques hav u playd angrybirds space where they use a concept called microgravity...can u explain it?

Answer 13

Microgravity technically is the absence of gravity. I haven't played angrybirds space, but if the angy birds still fall back to the surface, or just downwards, then they probably mean a smaller acceleration due to gravity.

Answer 14

in my point of view ,the vanishing need some resource ,so the vanish may give the ball A big push.about the mass ,we could use the laser or the Ultrasound etc,that will be universal in the future

Answer 15

Could you tell me a bit about the differences between the regular angry birds(which I've played), and the angry birds space( which I havent)?

Answer 16

Someone should add the effect of earth rotation too. What would happen then?

Answer 17

the ball would be flying tangentially from the point at tremendous speed

Answer 18

mathavraj, true, unless we are in one of the Poles

Answer 19

y..wat happens at the poles and at the equator

Answer 20

At the poles, the ball should fall rotating at the same angular speed than the Earth (say, one turn each 24 hours). In any other latitude you need to combine speed right before the earth disappears with tangential velocity and with centrifugal acceleration

Answer 21

can u explain it briefly....

Answer 22

Seems to me that centrifugal force would not apply as tangential and initial speeds are constants and the sum of both would be a straight line

Answer 23

At poles, u won't experience any rotational motion. think of it as a point on the axis of rotation. will the rotational motion have any effect at this point? No, right? The same thing happens at the poles.

Answer 24

Vaidehi09, totally wrong. If I drop a ball while in the Pole, the ball does not rotate versus the Earth but it does versus the outer space at the same speed as the Earth does. Therefore, if Earth vanishes what we have is a ball rotating as w/o Earth your reference system is in the outer space and not on the Earth, right?

Answer 25

Same example if you drop a ball when in the center of a merry-go-round. You do not see it rotate but people outside the mgr do

Answer 26

so how would the ball fly in poles and in the equator...please carlosgp can u give me a diag

Answer 27

@CarlosGP Yes, that is indeed true. I was speaking from Earth's frame of reference. I didn't take into consideration the space outside it. Thanks for pointing it out!.

Answer 28

Dear @mathavraj ,
All bodies which have mass and volume has a gravitational pull. (Newton's gravitational equation). Thus there will be no earth and your ball will cease falling and you will see the moon shoot out tangentially into space.
Thanks.
@Arnab_Chatterjee

Answer 29

@mathavraj I think even at the poles the ball will straight down, linearly. since it shouldn't be affected by the earth's rotation.

Answer 30

no i think arnab u r rong..the ball will fall down with a velocity 19.6 m/s after 2 sec of its free fall

Answer 31

@mathavraj , The moon's gravity will stop the ball. Remember, that time it will be felt considerably greater.

Answer 32

And even probably pull it towards itself...

Answer 33

well if the earths gravity wont the moon fly away tangentially with great speed ...ok ignore the moon what will happen to the ball at the pole and at the equator..pls tell me