Vibration of vibration are pulling a child back on a swing and letting it go, or hitting a tuning fork and letting it ring. The mechanical system vibrates at one or more of its natural frequencies and damps down to motionlessness. Forced vibration is when a time-varying disturbance (load, displacement or velocity) is applied to a mechanical system. The disturbance can be a periodic and steady-state input, a transient input, or a random input. The periodic input can be a harmonic or a non-harmonic disturbance. Examples of these types of vibration include a washing machine shaking due to an imbalance, transportation
What a Time to Be Alive What a Time to Be Alive What a Time to Be Alive is a collaborative commercial mixtape by Canadian rapper Drake and American rapper Future. It was released on September 20, 2015, by Young Money Entertainment, Cash Money Records, Republic Records, OVO Sound, Epic Records, A1 Records and Freebandz. "What a Time to Be Alive" was supported by Drake and Future's previous collaboration on the single "Where Ya At". As friends, they originally planned to record a mixtape together earlier in the year; the project never fully materialized. However, during recording sessions for "Where Ya At", the duo began working