APPENDIX

PLATE $1$

PLATE $2$

PLATE $34\mathrm{.}3$ Data and calculations for plate clutch

INSTRUCTION $1$

NB$!$ ALL YOUR CALCULATIONS MUST BE ROUNDED TO $3$ DECIMAL PLACES

show all calculations

Show one formula and one sample calculation and write the rest in table form

Tabulate all your results in table $4-4$ Table $4-4$

Plate Clutch

Appendix at

back

$4\mathrm{.}4$ Results and analysis for plate clutch

Instructions

Radiuses of plates $1$;$2$ and $3$ are shown on the appendix page.

Mean radius is the average of the radius of each plate.

On the table, your given add the weight $($W$($in newtons$))$ column and torque $($theoretical and experimental$)$ after your calculations and tabulate the results.

$1\mathrm{.}78$

Note that, The mass of the top$-$plate is $4\mathrm{.}0\%kg,$ and the plate radius $=0\mathrm{.}125m(R_t)$

$4\mathrm{.}4\mathrm{.}1$ Determine the mean radius for each plate

$R=\frac{R1+R2}{2}$

Practical: Mechanics of Machines II

Page $144\mathrm{.}4\mathrm{.}2$ Draw a graph of the moment of friction $T(y-$axis$)$ against $W(x-$axis$)$ for each

plate. $($use Excel$)$ for all $3$ plates on the same axis set.

Note: $T=m_{RR},($experimental$)$

$R_{tt}=$ is the radius of the turntable

$4\mathrm{.}4\mathrm{.}3$ Assume that uniform wear:

Frictional torque $T=WR(theoretical)$

where $=$ Frictional coefficient

$R=$ average plate radius

$W=Mg(noteM=$ plate mass $+$ mass $on$ top$)$

$\frac{T}{W}=R$

Thus $,=\frac{T}{WR}$

Determine $$ for each set of results. $($use $\frac{W}{T}$ graph in $4\mathrm{.}4\mathrm{.}2)$

Determine the average value of $.$

$5$

DISCUSSIONS

Which system $($V$-$belt, flat belt, or plate clutch$)$ had more friction?

Which system transmitted torque better?

Why do you think one system works better than the others based on friction?

How does the material of the plate clutch affect its performance?

How does a higher coefficient of friction impact the efficiency of plate clutches in torque

transmission?

$6$ CONCLUSION AND RECOMMENDATIONS

$6\mathrm{.}1$ Conclusion

Based on the comparison, which system is the most efficient for torque transmission: V$-$belt, flat

belt, or plate clutch?

How does friction influence the overall performance of V$-$belts, flat belts, and plate clutches?

What role does the material of the plate clutch play in its effectiveness? APPENDIX

PLATE $1$

PLATE $2$

PLATE $3$