- #1
Idividebyzero
- 64
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1. What is the tangential acceleration of a bug
on the rim of a 78 rpm record of diameter
9.79 in. if the record moves from rest to its
final angular speed in 7 s? The conversion
between inches and meters is 0.0254 m/in.
Answer in units of m/s2.
2. angular acceleration
3. converted 9.79 inches to 0.248666 meters using 0.0254 m/in. converted 78 rev/min to 8.168 rad/s using 2pi rad / 60 sec. alpha = delta omega / delta time. getting alpha as 8.168 rad/s / 7s = 1.1668 rad/s/s. multiply 1.1668 rad/s/s * 0.24866 m to get 0.2901 m/s^2. this is incorrect
on the rim of a 78 rpm record of diameter
9.79 in. if the record moves from rest to its
final angular speed in 7 s? The conversion
between inches and meters is 0.0254 m/in.
Answer in units of m/s2.
2. angular acceleration
3. converted 9.79 inches to 0.248666 meters using 0.0254 m/in. converted 78 rev/min to 8.168 rad/s using 2pi rad / 60 sec. alpha = delta omega / delta time. getting alpha as 8.168 rad/s / 7s = 1.1668 rad/s/s. multiply 1.1668 rad/s/s * 0.24866 m to get 0.2901 m/s^2. this is incorrect
