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23 Nov 2019
A person walks into a room and switches on the ceiling fan. Thefan accelerates with constant angular acceleration for 15 s untilit reaches and angular speed of 1.9 rotations/sec. After that thespeed remains constant as long as it is "on". The person stays inthe room for a short time then 5.5 min after turning the fan on,she switches it off. The fan decelerates with a constant angularacceleration, taking 2.4 min to come to a rest. What is the totalnumber of revolutions made by the fan from the time it was turnedon until the time that it stopped?
A person walks into a room and switches on the ceiling fan. Thefan accelerates with constant angular acceleration for 15 s untilit reaches and angular speed of 1.9 rotations/sec. After that thespeed remains constant as long as it is "on". The person stays inthe room for a short time then 5.5 min after turning the fan on,she switches it off. The fan decelerates with a constant angularacceleration, taking 2.4 min to come to a rest. What is the totalnumber of revolutions made by the fan from the time it was turnedon until the time that it stopped?
