Masses Connected by Strings on Horizontal Surfaces – Practice
Questions:
1) Two objects A and B, with masses of 5kg and 2kg respectively, are being pulled by a cable with a force of 14N to the right as shown below:
Calculate:
a) the acceleration of the objects
b) the force acting on object A and B
c) the tension in the cable
2) Three objects A, B and C with masses of 50kg, 10kg and 20kg respectively, are being pulled by cables with a total force of 40N to the right as shown below:
Calculate:
a) the acceleration of the objects
b) the force acting on object A, B and C
c) the tension in the cables indicated as T1 and T2 above.
Quick Answers:
1) a) 2 m/s2 b) FA = 10N right, FB = 4N right c) 10N right
2) a) 0.5 m/s2 b) FA = 25N right, FB = 5N right, FC = 10N right c) T1 = 30N, T2 = 25N
Worked Answers: