Mechanics problem

  • Thread starter 2502floyd
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  • #1
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Can anyone please please please :cry: 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.

:cry: :cry: :cry:
 

Answers and Replies

  • #2
3,763
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What have you done up till now ???
 
  • #3
4
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Part a.

I make it 40 revolutions
I cant do part c because I cant do part b
 
  • #4
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2502floyd said:
Part a.

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

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

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