Concepts Of Physics MCQ Edition [Volume 1]PhysicsFriction
Consider the arrangement depicted in the figure. Determine the tension in the string attached to the 0.50 kg block. (Assume g = 10 m/s ^2 )
Options
- A4.8 N
- B5.2 N
- C4.6 N
- D5.0 N
Correct answer
A. 4.8 N
Step-by-step solution
The maximum frictional force acting on the two blocks on the horizontal surface is given by: f = m₁ g + m₂ g Substituting the given values: f = 0.2 1.0 10 + 0.2 1.0 10 = 2 + 2 = 4 N The driving force due to the hanging block is: W = m₃ g = 0.5 10 = 5 N Since the driving force is greater than the total frictional force ( 5 N > 4 N ), the system will accelerate. Let a be the common acceleration of the system. The net force on the system is: F_ net = W - f = 5 - 4 = 1 N The total mass of the system is: M = 1.0 + 1.0 +