1. The 52 kg block shown starts from vast at position A and slides down the Inclined plane to position B. The coefficient of friction between the block and the plane is μ = 0.15.
What is most nearly the velocity of the block at position B?
(A) 2.4 m/s
(B) 4.1 m/s
(C) 7.0 m/s
(D) 9.8 m/s
2. A 1530 kg car is towing a 300 kg trailer. The coefficient of friction between all tires and the road is 0.80. The car and trailer are traveling at 100 km/h around a banked curve of radius 200 in. What is most nearly the necessary banking angle such that tire friction will NOT be necessary to prevent skidding?
(A) 8.0°
(B) 21°
(C) 36°
(D) 78°