Problem#1 10 Points A man is sliding down a pole thru 2.5 meters as shown below. He starts from rest and lands with the speed of 3.1 m/s.
Man’s mass is 85 kg.
a) Draw Free Body Diagram of the man sliding down the pole.
b) Find the Friction force exerted on the man by the pole. Use Newton’s 2nd Law of Motion to solve this problem.
c) Determine acceleration of the man sliding down the pole.

Question 7 [2 marks] in the circuit below, the electromotive force generated by the battery is e = 6.0 v, and the resistances are r1 = r4 = 1.0 q, r2 = r3 =2.0 q. r. the power delivered by the battery to the circuit is closest to a. 6 w в. 12 w с. 15 w d. 18 w e. 20 w final exam autumn 2014 page 5 of 9 68037 physical modelling faculty of science [2 mark] question 8 with reference to question 7, the current through resistor r2 is closest to a. 1 a в. 2 а c. 3 a d. 4 a e. 6 a

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