An electric engine rotating a workshop grinding wheel at a rate of 117 rev/min is switched off. Suppose the wheel has a constantly negative angular acceleration of opulence and magnitude 2. 40 rad/s^2.
Find:
a) How long it takes for the grinding wheel to stop. (In sec)
b) Across how lots of radians has the wh
more
Filed
under:
Grinding Wheel
Tags: electric, Grinding Wheel, motor, Physics, Question, Rate, rev/min, rotating, switched, wheel, workshop.
January 3, 2010 at 14:16
(a) what’s the angular momentum of a 2.7 kg uniform cylindrical grinding wheel of radius 18 cm when rotating at 1300 rotations per minute?
—kg·m2/s
(b) What opulence and magnitude of twisting force is needed to cancel it in 6.0 s?
—N·m
more
Filed
under:
Grinding Wheel
Tags: angular, cylindrical, Grinding Wheel, momentum, radius, rotating, uniform, What, wheel, when.
December 17, 2009 at 12:14
What is the linear speed of a tip on the fringe of a 0.35 m diameter grinding wheel rotating at 1650 rotations per minute?
b. What is the acceleration of the tip?
more
Filed
under:
Grinding Wheel
Tags: 0.35, 1650, diameter, edge, Grinding Wheel, linear, point, rotating, rpm...., speed, What, wheel.
November 21, 2009 at 23:32
What is the linear speed of a point on the edge of a 0.35 m diameter grinding wheel rotating at 1950 rpm.
What is the acceleration of the point?
more
Filed
under:
Grinding Wheel
Tags: 0.35, 1950, diameter, edge, Grinding Wheel, linear, point, rotating, rpm...., speed, What, wheel.
July 16, 2009 at 01:32