(Solved): -4- Question 3 Two blocks, A and B, of mass m and 3m respectively, are connected through a cable a ...

-4- Question 3 Two blocks, A and B, of mass m and 3m respectively, are connected through a cable and a pulley (see figure 3.1). Block A is also attached to a spring, which is fixed to the ground and has a spring constant k = 50 N/m. Block B is on an inclined plane forming an angle of 30 degrees with the horizontal line. Block B is released from rest with no slack in the cable and with the spring not being stretched or compressed. Assign to m the value in kg of your body weight, then (a) calculate the distance covered by block B once it stops for the first time; assume that there is no friction. [12 marks] (b) assume a kinetic friction force F = 5 N acts on block B and calculate the distance covered by block B once it stops for the first time. [8 marks] State any assumptions and comment on your solutions. B 3m 30° Figure 3.1 m