First slide
The two types of acceleration

A circular disc is rotating with a varying speed u =(2t-4) m/s, where t is in second. An object is placed in the disc. The pseudo fore on the object is


Total acceleration of the disc aT2+aR2 and pseudo force depends on net acceleration.

aT=2m/s2aR=u2/R        at       t=2sec                                                                                                                  u=0                                                                                                                  aR=0

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