# Mechanics problem

1. Sep 22, 2004

### 2502floyd

Can anyone please please please help?

A flywheel initially rotating at a speed of 800 rev/min, is brought to rest with uniform angular deceleration in 6 secs.

a. How many revolutions does the flywheel make before coming to rest?

b. Determine the magnitude and direction of the resultant linear acceleration of a point A on the flywheel 0.2s before coming to rest. Draw a vector diagram showing the magnitude and direction of the resultant linear acceleration and its radial and tangentail components. A is positioned at a fixed radius of 160mm from the axis of rotation.

c. At what time will both the radial and tangential components of acceleration be equal in magnitude.

2. Sep 22, 2004

### marlon

What have you done up till now ???

3. Sep 23, 2004

### 2502floyd

Part a.

I make it 40 revolutions
I cant do part c because I cant do part b

4. Sep 23, 2004

### maverick280857

The question asks you to make a diagram (which you should do anyway). So why not make one? Or try?

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