Question

Again, looking down from a stationary tree branch, a merry-go-round with a 1 meter radius spins in a counter-clockwise direction with an angular velocity of 1 radian per second. From your viewpoint, a bird of mass 0.2kg flies in a straight line over the axis of the merry-go-round at a uniform speed of 2m/s. Consider three instants: when the bird first crosses the outer edge of the merry-go-round; when the bird crosses the center of the merry-go-round; and, finally, when they bird finally crosses the outer edge of the merry-go-round. For each of the three moments, draw a picture in the frame of reference stationary with respect to the Earth, and picture in the frame stationary with respect to the merry-go-round. For each of the three moments, answer the following questions.

a) To an observer on the merry-go-round, illustrate the direction of the Coriolis pseudo force that seems to act on the bird.

b) To an observer on the merry-go-round, illustrate the direction of the centrifugal pseudo-force that seems to act on the bird.

Answer 1

to eodh otha case when the bird rosses canier g around, so, v=v-en-av (d o