Your CECS graduation tassel hangs from the rear view mirror of your graduation gift, a 1981 DeLorean DMC-12 with Mr. Fusion garbage fusion generator!!! Your tassel hangs plumb or vertical when driving at a constant speed on a level highway. When accelerating you observe the tassel makes an angle of 46 degrees with the horizontal. Determine the magnitude of this acceleration in km/(hour-sec). Enter absolute value only. Do not enter signs.

1 answer

Draw FBD
Tsin46 = mg
Tcos46 = ma (net force)

a = g cos46/sin46