When a force of P lb = 30 is applied to the brake arm, the 50lb cylinder A is descending with a speed of 20 / ft s . Determine the number of revolutions wheel B will rotate before it is brought to a stop. The coefficient of kinetic friction between the brake pad C and the wheel is 0.5 k = . The wheel’s weight is 25lb , and the radius of gyration about its center of m

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?