937 WordsJun 28, 20144 Pages

UNIVERSITI TUNKU ABDUL RAHMAN
|Centre |: Centre for Foundation Studies (CFS) |Unit Code |: FHSC1014 |
|Course |: Foundation in Science |Unit Title |: Mechanics |
|Year/ Trimester |: Year 1 / Trimester 1 | | |
|Session |: 201401 | | |
Tutorial 4: Application of Newton’s Laws.
1. The distance between two telephone poles is 50.0 m. When a 1.00 kg bird lands*…show more content…*

[(a) 1.7 m/s2, 17 N, (b) 0.69 7 m/s2, 17 N]
10. A block of mass m = 5.8 kg is pulled up a ( = 25° incline as in figure with a force of magnitude F = 32 N. (a) Find the acceleration of the block if the incline is frictionless. (b) Find the acceleration of the block if the coefficient of kinetic friction between the block and incline is 0.10. [(a) 1.4 m/s2, (b) 0.49 m/s2]
11. A 276-kg glider is being pulled by a 1950-kg airplane along a horizontal runway with an acceleration of a = 2.20 m/s2 to the right as in figure. Find (a) the thrust provided by the airplane’s propellers and (b) the magnitude of the tension in the cable connecting the airplane and glider. [(a) 4.90 kN, (b) 607 N]
12. An object with mass m1 = 5.00 kg rests on a frictionless horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m2 = 10.0 kg, as shown in figure. Find (a) the acceleration of each object and (b) the tension in the cable. [(a) 4.90 kN, (b) 607 N]
13. In figure in Q22, m1 = 10 kg and m2 = 4.0 kg. The coefficient of static friction between m1 and the horizontal surface is 0.50, and the coefficient of kinetic friction is 0.30. (a) If the system is released from rest, what will its acceleration be? (b) If the system is set in motion with m2 moving downward, what will be the acceleration of

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