Top Posters
Since Sunday
s
5
g
5
K
5
o
5
g
5
o
4
k
4
s
4
I
4
k
4
j
4
o
4
Home Q & A Board Science-Related Homework Help Physics
New Topic  
mikael mikael
wrote...
Go to Answer
Donated
Posts: 12017
Rep: 103 2
10 years ago

 
A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 70 rad/s. The wheel is run at that angular velocity for  30 s and then power is shut off. The wheel slows down uniformly at 2.5 rad/s2 until the wheel stops. In this situation, the angular acceleration of the wheel between t = 0s and t = 10 s is closest to: 
A)
 
7.0 rad/s2 
B)
 
8.4 rad/s2
C)
 
9.8 rad/s2
D)
 
11 rad/s2
E)
 
13 rad/s2
Read 454 times
2 Replies
Replies
Answer accepted by topic starter
padrepadre
wrote...
#1
Staff Member
Educator
Top Poster
Posts: 21608
Rep: 4541 17
9 years ago
Sign in or Sign up in seconds to unlock everything for free
1
Mastering in Nutritional Biology
Tralalalala Slight Smile

Related Topics

mikael Author
wrote...
#2
Donated
9 years ago
Thanks a lot, really helps.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  943 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 790
  
 610
  
 308
Your Opinion
What's your favorite math subject?
Votes: 315
Previous poll results: Which country would you like to visit for its food?