To tune an instrument using beats, more information than just the beat frequency is needed. in addition to recording the initial beat frequency fbeat, ifbeat, if_beat, i, each member, except diane, also records the change in the frequency fbeatfbeatf_beat (increase or decrease) when they increase the tension in their low e string.

An electric motor is used to drive a power press which makes steel turning moment diagrams 323 pressings from a metal sheet. the motor runs at a mean speed of 50 rev/s. the torque required is 10.0nm for 0.2s, followed by 1.0nm for0.3 s with this sequence then being repeated. what is the minimum power required of the motor and the moment of incrtia required for the t1ywhcel if the speed fluctuations are to be restricted to 1.5%?