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April 18, 2014

April 18, 2014

Posted by **Sandy** on Thursday, April 16, 2009 at 7:03pm.

How many revolutions does it make during this time?

I got 940 s for the first part, but for the second part Do i use the formula theta=w^2/2(.49/2pi)

I am very lost on the second part.

I am very lost please help. I determined that

- Physcis -
**bobpursley**, Thursday, April 16, 2009 at 7:08pmon the second...

revolutions= wi*t+ 1/2 alpha*t^2

wi is zero

alpha is ang acceleration in rpm

alpha= .49rad/s^2 * 3600sec^2/min^2*1rev/2pi rad

That ought to do it.

- Physcis -
**bobpursley**, Thursday, April 16, 2009 at 7:08pmon the second...

revolutions= wi*t+ 1/2 alpha*t^2

wi is zero

alpha is ang acceleration in rpm

alpha= .49rad/s^2 * 3600sec^2/min^2*1rev/2pi rad

That ought to do it.

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