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1. Two packets P and Q are connected by a rope which passes over a smooth fixed pulley. P has mass 4kg and Q has mass Mkg where M > 4. The system is released from rest with the string taut. The initial acceleration of each particle is 3ms.

Calculate
(a) The initial tension

I found this to be 51.2N

(b) The value of M

7.53

(c) The initial force exerted by the rope on the pulley..
Given that during the first 2s of the motion neither particle emets any obstruction,
(d)calculate the distance moved by P during the first 2s

Any help on the last 2 parts of this question is very much appreciated guys!
Tut
2. c) 2T= 2 x 51.2=102.4 N

d) u=0 t=2 s=? a=?

Work out the acceleration via F=ma then sub in the values into the suvat equation s=ut +[at^2]/2
3. Here is my solution.
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Updated: November 17, 2005
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