A 1.50 kg grinding wheel is in the form of a solid cylinder of radius 0.10 m. (a) What constant torque will bring it from rest to an angular speed of 1200 rev/min in 2.5 s? (b) Through what angle has it turned during that time? (c) Calculate the work done by the torque. (d) What is the grinding wheel's kinetic energy when it is rotating at 1200 rev/min?
University of Ilorin PHY101 2026-exam past question
- (a) 0.377 N m; (b) 157 rad; (c) 59.2 J; (d) 59.2 J
- (a) 0.754 N m; (b) 314 rad; (c) 118 J; (d) 59.2 J
- (a) 0.377 N m; (b) 314 rad; (c) 118 J; (d) 118 J
- (a) 0.188 N m; (b) 78.5 rad; (c) 14.8 J; (d) 59.2 J
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