Cho cơ cấu tay quay con trượt ABC như hình; Khâu dẫn AB quay đều với vận tốc góc ω1= 5 rad/s; Kích thước và vị trí cơ cấu như sau: AB = 1m; ABC = 600; BAC = 900

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b. refraction c. diffraction d. interference

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?