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maths file:// x 6 file:/// x @ *SMA( x DD) 8MAO X PRE *8MA( X PRE 8MAO X physics PRE 7136- X D AQA- X

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maths file:// x 6 file:/// x @ *SMA( x DD) 8MAO X PRE *8MA( X PRE 8MAO X physics PRE 7136- X D AQA- X | Media X Photo X + X O File | C:/Users/Dell/AppData/Local/Temp/Temp1_7xhOUdS3y7zMcwiKJwmwjxscZoKjAKIxKVtQZ13.zip/8MAO_22_que_20211014.pdf 8 of 12 Q + Q [ Page view | A Read aloud Add text Draw v Highlight v Erase DO NOT WRITE IN THIS AREA P(2m) O(5m) 2h h Figure 1 A ball P of mass 2m is attached to one end of a string. The other end of the string is attached to a ball O of mass 5m. The string passes over a fixed pulley. The system is held at rest with the balls hanging freely and the string taut. The hanging parts of the string are vertical with P at a height 2h above horizontal DO NOT WRITE IN THIS AREA ground and with O at a height h above the ground, as shown in Figure 1. The system is released from rest. In the subsequent motion, O does not rebound when it hits the ground and P does not hit the pulley. The balls are modelled as particles. The string is modelled as being light and inextensible. The pulley is modelled as being small and smooth. Air resistance is modelled as being negligible. Using this model, (a) (i) write down an equation of motion for P, (ii) write down an equation of motion for Q, (4) (b) find, in terms of A only, the height above the ground at which P first comes to DO NOT WRITE IN THIS AREA instantaneous rest. (7) (c) State one limitation of modelling the balls as particles that could affect your answer to part (b). In reality, the string will not be inextensible. (d) State how this would affect the accelerations of the particles. (1) DO:15 Type here to search O J 20'C 0) 16/06/2022

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