The problem that follow involve straight-line motion. The time t is in seconds unless othe...

The problem that follow involve straight-line motion. The time t is in seconds unless otherwise stated.

Problem

A centrifuge used to subject engineering components to high acceleration has a radius of 8 m. It starts from rest at t = 0, and during its two-minute acceleration phase it is programmed so that its angular acceleration is given as a function of time in seconds by α = 0.192 – 0.0016t rad/s2. At t = 120 s, what is the' magnitude of the acceleration a component is subjected to?