Question

please help part B how do you find delta theta?

part C help

1. Two children running along the side of a merry-go-round, push on it to spin it faster, as shown to the right. The first child pushes with E 24.0 N, applied tangent to the merry-go-round at its edge. The second child pushes with Fa-13.O N, also applied tangent to the edge of the merry-go-round. The merry-go-round is free to rotate about its center, has a mass of 70.0 kg and a radius of 1.60 m. You may treat the merry-go-round like a uniform disk. FI Tsm F2 a) What is the angular acceleration of the merry-go-ground due to the children pushing on it? (6 pts 59.2 89.6 Sre I-89.6 Kgm .66 rad Is a4.1.60 13.0 160 b) If the merry-go-ground was initially at rest when the children began to push, find the angular Nel Torqe =F T 692 speed of the merry-go-round after it rotated 2.30 revolutions? (4 pts) +2DO o4.451 wa663C14u) w21907 rad/s WE VI 01552 u.27 How much time did the children need to the spin the merry-go-round 2.30 revolutions? (4 pts) c) 2 t Jauug 66 t =

Answer 1

B) a=0.66 radler wiro O= 2.30 x 20 14.48 rad. using we?- wie o we wy² - 2x0 we = w ²+ 200 W = 0 + 2 x 14.45*0.66 wf = 2x14.45 00 66 * 4.367 rad/sec 20. 9 ug wist 4-367-0% 0.66 t 6.616 seconds Scanned with CamScanner