A system comprising blocks, a light frictionless pulley, a frictionless incline, and connecting ropes is shown in the figure. The 9.0-kg block accelerates downward when the system is released from rest.
The tension in the rope connecting the 6.0-kg block and the 4.0-kg block is closest to
A) 30 N.
B) 33 N.
C) 36 N.
D) 39 N.
E) 42 N.
Question 2
A pickup truck is moving at 25 m/s with a toolbox of mass m resting on the bed of the truck 2.5 m behind the cab. Suddenly the brakes are applied, causing the toolbox to slide, and the truck comes to a stop in 4.7 s.
The coefficient of kinetic friction between the toolbox and the bed of the truck is 0.28. After the brakes are applied, how much time elapses before the toolbox strikes the cab?
What will be an ideal response?
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