Homework Help: Physics

Posted by Victor on Monday, December 21, 2009 at 7:50pm.

Could someone please help me with this question. Thank you

The person makes a spin through the air, increasing the angular velocity from 3.0 to 5.0 rev/s while rotating through 1/2 revolution. How much time does this it take ?

Physics - bobpursley, Monday, December 21, 2009 at 7:55pm
wfinal^2=winitial^2+ 2*angacceleration*displacement

displacement is PI radians
Wf=2PI*5rad/sec wi= 2PI*3 rad/sec

solve for angular dcceleration,then

angacceleration= (wf-wi)/time
and solve for time.
Physics - Victor, Monday, December 21, 2009 at 8:18pm
Im lost is there anyway you can solve this question for me? I know I should try by myself but I get ridiculous answers that defently do not make sense. I know how to solve for Wf which is .5235 and Wi .314159 but then Im lost

Answer this Question

Related Questions

Physics - Can someone please answer my question on this paragraph from my ...
psychology/ABA - Can someone please tell me if I am defining operant ...
Reading-phonics - I just want to get someone's opinion on a question that ...
physics - Can you please help me with this question? A person is flying through ...
physics someone please helpp - A scuba diver has an air tank with a volume of 0....
physics - can someone take me through this vector combination question please an...
Physics - A 65kg person's density is 990kg/m^3 with 2.4 L of air in lungs. ...
Physics - Multiple choice please help. How much kinetic energy does a 1 kg ball ...
physics - the tub of a clothes washer goes into its spin-dry cycle starting from...
College Physic - The tub of a washer goes into its spin cycle, starting from ...

For Further Reading

First Name:
School Subject:
Answer: