(a) is zero.
(b) is propotionality to v.
(c)is propotional to v.v.
(D)is proportional to v.v.v.
2007-01-07 18:12:56 · 5 answers · asked by good friend 1 in Science & Mathematics ➔ Physics
Momentum has both magnitude and direction.
If a body is in circular motion the speed may be a constant, but the direction is continuously changing.
The force acts perpendicular to the speed and is proportional to the square of the velocity (v v ).
Answer is (c).
2007-01-07 19:39:01 · answer #1 · answered by Pearlsawme 7 · 0⤊ 0⤋
zero.
If m = mass of the object, Wi = initial angular velocity of the object and Wf = final angular velocity of the object at the end of the time period 't' considered,
then Rate of change of momentum = (mWi - mWf)/t = 0 ,as mWi = mWf. (Linear velocity V is Wr where r is the radius of the circle.For contant V, W is also constant)
2007-01-07 18:31:57 · answer #2 · answered by Poornima G 2 · 0⤊ 0⤋
Answer is (C)
The object is going around in a circle at constant speed v hence it is continously accelerating
=(1/2)mv^2
2007-01-07 20:00:18 · answer #3 · answered by drsgp 1 · 0⤊ 0⤋
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2016-12-12 06:40:57 · answer #4 · answered by Anonymous · 0⤊ 0⤋
(B)
2007-01-07 18:27:24 · answer #5 · answered by vishwa 4 · 0⤊ 0⤋