(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 3-lb collar can slide on a horizontal rod which is free to rotate about a vertical shaft. The collar is intially held at A by a cord attached to the shaft. A spring constant of 2 lb/ft is attached to the collar and to the shaft and is undeformed when the collar is at A. As the rod rotates at the rate ThetaDot=16 rad/s, the cord is cut and the collar moves out along the rod. Neglecting friction and mass of the rod, determine

a)the radial and transverse components of the acceleration at A

b)The acceleration of the collar relative to the rod at A

c)the transverse component of the velocity of the collar at B

2. Relevant equations

3. The attempt at a solution

I know the solution to the problem. The answers are

a) Ar=0, Atheta=0

b)1536 in./s^2

c)32.0 in/s

I don't feel like this is a difficult problem, but I am definitely missing a key concept. How can you determine these quantities without r as a function of time?

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Dynamics Homework Problem

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