A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz.
(a) What is the maximum speed of the needle?
? cm/s
(b) What is the maximum acceleration of the needle?
? cm/s^2
Physics Help. Answer please?
2015-12-10 4:52 pm
回答 (2)
2015-12-10 11:12 pm
✔ 最佳答案
(a) max speed = 1.27cm * (2π * 2.55Hz) = 20.3 cm/s(b) max accel = 1.27cm * (2π * 2.55Hz)² = 326 cm/s² = 3.26 m/s²
Hope this helps!
2015-12-10 5:28 pm
Drop the course, imbecile.
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