- #1
didaw1
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(i) A rotating machine shaft turns through 2100 revolutions in 3 minutes. Determine the average angular velocity, w, of the machine shaft in rad/s.
the answer for this is
2100 x 2 pie = 4200 pie radian
3 mins = 180 seconds
4200 / 180 = 73.3 rad/s
(ii) Determine the area and arc length of the minor sector shown here for the 120mm diameter circle.
minor section angle = pie / 3 x radians (this question is formatted as pie with a line under it then 3 under the line and radians next to it so i am presuming that i have to x it)
i know how to work out everything apart from the minor section angle i just don't know what it means by radians can anyone help me out i would really appreciate it?
the answer for this is
2100 x 2 pie = 4200 pie radian
3 mins = 180 seconds
4200 / 180 = 73.3 rad/s
(ii) Determine the area and arc length of the minor sector shown here for the 120mm diameter circle.
minor section angle = pie / 3 x radians (this question is formatted as pie with a line under it then 3 under the line and radians next to it so i am presuming that i have to x it)
i know how to work out everything apart from the minor section angle i just don't know what it means by radians can anyone help me out i would really appreciate it?