Question 11 Х Р go Bol Figure 1 Figure 1 shows two blocks P and Q which are connected by light inextensible wire over a smooth pulley. P has mass 7.4 kg and is on a rough slope which is inclined at 0° to the 12 horizontal where tan 8 = 1. Q has mass 10 kg and is on a smooth slope which is inclined at 0° to the horizontal where tan = 35 The system is released from rest. P accelerates up the slope at 1.2 ms. (a) Make a copy of figure 1 and show all of the forces acting on P and all of the [4] دمحمد
iley. P has mass 7.4 kg and is on a rough slope which is inclined at 0° to the horizontal where tane = 33. Q has mass 10 kg and is on a smooth slope which is inclined at pº to the horizontal where tan o = 12 35 The system is released from rest. P accelerates up the slope at 1.2 ms 2. (a) Make a copy of figure 1 and show all of the forces acting on P and all of the forces acting on Q. [4] (b) Find the tension in the wire and the coefficient of friction between P and the slope. [4] After 2 seconds P reaches point X and Q reaches point Y. The slope beyond point X is smooth and the slope beyond point Y is rough with coefficient of friction between Q and the slope being P and Q come to rest t seconds after passing points X and Y respectively and have travelled s metres during this time. [5] (c) Find the value of t and the value of s.
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