Question

Please pick the correct answer from each set in the parentheses. If you want to provide an explanation, only do so for the harder ones, I'm not that stupid that I'd need one for the super-easy ones.

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Nellie Newton holds an apple weighing 1 newton at rest on the palm of her hand.
Nellie's hand supports the apple with normal force N, which acts in a direction opposite to W. We can say N (equals W/has the same magnitude as W).

Suppose Nellie now pushes upward on the apple with a force of 2 N. The apple (is still in equilibrium/accelerates upward), and compared to W, the magnitude of N is (the same/twice/ not the same, and not twice)
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My answers:
equals W (CORRECTION: has the same magnitude! SORRY! Credit for correction to @AllTehMaffs!); accelerates upward; not the same, and not twice

Answer 1

what you think?

Answer 2

Hold on, I'm editing...*
...
...
...
Done! @Mashy

Answer 3

@AllTehMaffs Hello~ :3

Answer 4

hallo - how are teh phyziks?

Answer 5

Eh, they're okay...
Test is Monday.... c:

Answer 6

Yay tests!

Answer 7

So... help plz? >.<;;

Answer 8

k k ^^

Answer 9

The site has been super wonky lately :P

Answer 10

Yep, I can't get notifications or see SmartScores - again =.="
This is the second time! D;
I really dislike how the interface is acting up.

Answer 11

They must be doin' something fancy!

Answer 12

LOL, makes sense.
You can't see them either, eh?

Answer 13

nope nope :/

Answer 14

Haha glad to know I'm not the only one suffering from this. ^~^"
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o_o I was just about to tag you in the question "At what altitude the value of g become one fourth than on the surface of the earth?**" and BAM there you are.
Are you psychic? xD

Answer 15

most definitely

Answer 16

@_@

Answer 17

Lol don't tag, the poor guy's got enough notifications xD

Answer 18

that's a person?? - Didn't even think of such a thing....

Answer 19

someone pls help me with my question!!!!!!!

Answer 20

HELP ME

Answer 21

I do " @ _ @ "
See, it works.
I'll choose to ignore that because you're flouting the Code of Conduct by asking for help under another person's question, @julianahe

Answer 22

a 1200kg car is travelling at 35 m/s. When the brakes are applied, a braking force of 3200N is applied to the car until the car comes to rest. How far does the automobile travel over the time it is decelerating?

Answer 23

But. Since I'm a nice person, I'll try my best to help, but don't expect -
.....
Don't post the question in here.
I can see it already in the question pulse.

Answer 24

OK Then go view my question.. ITS physics

Answer 25

Ah, sorry. Can't help with that... takes too long...
I've got a test on that Monday, so maybe @AllTehMaffs can help ... (for a few minutes, I can wait)?

Answer 26

Oh wait, he's already there LOL
Go maffs! xD

Answer 27

did u get the answer?

Answer 28

Did I? Well, I did post up my answers...
But as to whether they are right - I wouldn't know.
I made logical guesses.

Answer 29

Your second one is right fo sho ^^

Answer 30

How about you tell me which ones are wrong (as in re-type my answer) and then type out the correct one lol

Answer 31

I don't think your first one is correct though



The normal force is equal in magnitude but opposite in direction from the gravitational force, which you can tell by drawing them.

Answer 32

I dunno about the third one though - is the apple being pushed up by 2N *more than the normal force, or 2N including the normal force?

I think the former, and I think you're right.

Answer 33

Uh, type it out please ....

Answer 34

All you gotta do is change the first one to "has the same magnitude" and you're set!

Answer 35

Ah, alrighty.
WAIT - how was I so stupid?! D:

Answer 36

well you *do set them equal to each other when you sum the forces - I got caught up in that. But drawings are always the best bet ^^

Answer 37

Well. Thanks for making me feel less stupid, haha xD

Answer 38

nevah feel stupid! It's counter productive ^^

Answer 39

Eh, okais c:

Answer 40

@AllTehMaffs should I close this?

Answer 41

On second thought - yeah, I will