speed of the rock?
A)speeds up
B) slows down
C) remains the same
D) will abruptly stop
If you are spinning in an office chair with your legs exteneded straight out and you suddenly pull your legs in towards your body what is the effect on your angular momentum?
A) increases
B) decreases
C) remians constant
D) decreases to zero
2007-06-21 05:45:59 · 6 answers · asked by Amy M 5 in Science & Mathematics ➔ Physics
1. A)speeds up
due to conservation of angular momentum conservation.
2. C) remains constant
Angular momentum is always conserved in such cases.
2007-06-21 05:47:06 · answer #1 · answered by Som™ 6 · 2⤊ 0⤋
C) The speed of the rock stays the same. The path it travels has shortened, so it seems faster.
C) Angular momentum remains the same.
2007-06-21 14:09:55 · answer #2 · answered by Feeling Mutual 7 · 0⤊ 0⤋
If angular momentum is conserved?
L = mvr, so if you reduce r and keep m constant, what happens to v?
What happens to the skater in a spin who goes from arms spread to arms up in the air?
The second question is a freebie--unless an outside force exerts torque, angular momentum is conserved.
2007-06-21 12:49:59 · answer #3 · answered by Anonymous · 0⤊ 0⤋
1. A
and
2. C.
Angular momentum remaining constant (in C) allows for us to solve #1 in the first place!
2007-06-21 12:59:59 · answer #4 · answered by weeezin da juice 2 · 0⤊ 0⤋
Just like the Fonz; A
A on them both.
2007-06-21 12:48:36 · answer #5 · answered by Anonymous · 0⤊ 1⤋
A, both questions
2007-06-21 12:49:10 · answer #6 · answered by jxt299 7 · 0⤊ 0⤋