B c and d. I think these are the answers
Answer:
bro am board from school im down to talk
Explanation:
I believe when studying, you should read and study as much information as you can, textbooks, Notes, research, ETC. Studying is for you to put everything you have learned into one.
~Hope This Helped~
The answer should be c)4.8
At the bottom of the circle, the ball is being pulled upward by tension in the rope and downward by its own weight, so that the net force on it is
∑ F = 450 N - (0.75 kg) g = (0.75 kg) a
where a is centripetal acceleration. At this maximum tension, the ball has a maximum centripetal acceleration of
a = (450 N - (0.75 kg) g) / (0.75 kg) = 590.2 m/s²
Then its maximum tangential speed v is such that
a = v² / (1.0 m)
⇒ v = √((1.0 m) a) ≈ 25 m/s
