Question

Question 2 (80 marks)

A slotted disc rotates anti-clockwise as it decelerates uniformly from 100 rpm to rest in 3 seconds. At the same time object A is moving 0.48 m/s inwards in the slot but slowing down at a rate of 0.48 m/s2 .

Determine the nett acceleration of A at the instant the disc attains a speed of 30 rpm. The position of A at this instant in time is depicted in figure Q2

人280 mm 30 ° Figure Q2

Answer 1

Anen Given that , decelevates unt ormly A Sloted disc motrtes anti - dockotse a A s movina-o.48 mis slo N2. disc attains Detemine the net accelenatian Net acceleraon is caluatas bu usi Jhou at - Tanietal acceleration #xY a Radial accelation V a - Nel acidenation At 6 0 3 2TTCIo0 3 6x3 18 a.

280mm ubslut aU vals 0,28 (0.683816). ΓΟ. 2341v 0 2.8 1.14469 a 1. 0699 ms Net acceleration Ъ 1,0699 MIS