Technician A says that aluminum brake drums use cast iron friction surfaces. Technician B says that up to 0.030 in. (0.8 mm) should be left after machining a drum to allow for wear. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Question 2
A 3000 pound vehicle is calculated to have a kinetic energy of 90,000 ft-lb at 28 mph. If the speed of the vehicle remains the same and the weight is doubled to 6000 pounds, what will happen to the calculated kinetic energy?
A) It will increase by the square (x 4), to 360,000 ft-lb
B) It will remain the same
C) It will increase proportionally (x 2), to 180,000 ft-lb
D) None of these is correct
This girl has a long leg cast, which was applied after surgery to correct her clubfoot.
Two Surfaces of Ganymede
Like most world-changing inventions, the printing press of fifteenth-century Europe took advantage o
Use fingertips to apply friction to muscle attachments along inferior length of the clavicle.
Apply circular friction around ankles with fingertips.
Effects of Friction on Wind