- Joined
- Jun 21, 2007
- Messages
- 579
- Reaction score
- 4
Problem: "How long does it take for a 33-rpm record to rotate once, at constant speed? A) 0.033 seconds B) 0.29 s C) 2.66 s D) 3.33 s.
I first coveted 33 rpm into rps. I divided 33 rpm by 60 seconds and got 0.55 rps.
After this I can only think of dividing 0.55 by 1 to get the time it takes to complete 1 revolution. I get 1.81 seconds.
What am I doing wrong? is there a blatant equation I should be using?
I first coveted 33 rpm into rps. I divided 33 rpm by 60 seconds and got 0.55 rps.
After this I can only think of dividing 0.55 by 1 to get the time it takes to complete 1 revolution. I get 1.81 seconds.
What am I doing wrong? is there a blatant equation I should be using?