Question

Example 1.4: A merry-go-round usually consists of a central vertical pillar. At the top of it there are horizontal rods which can rotate about vertical axis. At the end of this horizontal rod there is a vertical rod fitted like an elbow joint. At the lower end of each vertical rod, there is a horse on which the rider can sit. As the merry-go-round is set into rotation, these vertical rods move away from the axle by making some angle with the vertical.

Answer 1

answer: length of the horizontal rod,H=2.1m

length of the initially vertical rod

V=1.5m , tita=37°

radius of the horizontal circular motion of the rider =H+V sin 37°=3.0m

if T cos tita =mg and T sin tita =mrw2=4π2 mrn2

tan tita =4π2rn2

g

n=√tan 1

4r. =. 4. rev s-1

as g=π2

Answer 2

Answer:

answer given by google aap