- #1
ohheytai
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In the dark in outer space, you observe a glowing ball of known mass 1.2 kg moving in the xy plane at constant speed in a circle of radius 4.5 m, with the center of the circle at the origin (< 0, 0, 0 > m). You can't see what's making it move in a circle. At time t=0 the ball is at location < -4.5, 0, 0 > m and has velocity < 0, 70, 0 > m/s.
a)
At time t=0, even though you can't see what's causing the motion, what can you conclude must be the direction of the vector Fnet?
b)You learn that at time t=0, two forces act on the ball, and that at this instant one of these forces is F1 = < -261, 1764, 0 > N. What is the other force?
Fperpendicular is m(v^2/r)
for the perpendicular force i got 1306.666667
which is right so i thought Fnet would be that or <0,1306.66667,0> but its not can someone please help? and idk how to do b please someone help!
a)
At time t=0, even though you can't see what's causing the motion, what can you conclude must be the direction of the vector Fnet?
b)You learn that at time t=0, two forces act on the ball, and that at this instant one of these forces is F1 = < -261, 1764, 0 > N. What is the other force?
Homework Equations
Fperpendicular is m(v^2/r)
The Attempt at a Solution
for the perpendicular force i got 1306.666667
which is right so i thought Fnet would be that or <0,1306.66667,0> but its not can someone please help? and idk how to do b please someone help!