[填空题]
While fishing, you g w;zg y+c8j2xdeq 5yzjup460o vt bored and start to swing a sinker weight around in a circle below you on a 0.25-m piece of fishing line. The weight makes a complete circle every 0.50 s. What is the angle that the fishing line may 6 q5o0j4uvzpkes with the vertical? [Hint: See Fig. 5–10.]