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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /213/CH16/EX16.19 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '213/CH16/EX16.19')
| -rwxr-xr-x | 213/CH16/EX16.19/16_19.sce | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/213/CH16/EX16.19/16_19.sce b/213/CH16/EX16.19/16_19.sce new file mode 100755 index 000000000..23af608a0 --- /dev/null +++ b/213/CH16/EX16.19/16_19.sce @@ -0,0 +1,25 @@ +//To find power and mass
+clc
+//Given:
+N1=225, N2=200 //rpm
+k=0.5 //m
+E1=15*1000 //N-m
+HolePunched=720 //per hour
+//Solution:
+//Power of the motor:
+//Calculating the total energy required per second
+E=E1*HolePunched/3600 //N-m/s
+//Calculating the power of the motor
+P=E/1000 //kW
+//Minimum mass of the flywheel:
+//Calculating the energy supplied by the motor in 2 seconds
+E2=E*2 //N-m
+//Calculating the energy supplied by the flywheel during punching
+deltaE=E1-E2 //N-m
+//Calculating the mean speed of the flywheel
+N=(N1+N2)/2 //rpm
+//Calculating the minimum mass of the flywheel
+m=round(deltaE*900/(%pi^2*k^2*N*(N1-N2))) //kg
+//Results:
+printf("\n\n Power of the motor, P = %d kW.\n\n",P)
+printf(" Minimum mass of the flywheel, m = %d kg.\n\n",m)
\ No newline at end of file |