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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 /764/CH12/EX12.3.b | |
| 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 '764/CH12/EX12.3.b')
| -rwxr-xr-x | 764/CH12/EX12.3.b/result12_3.txt | 56 | ||||
| -rwxr-xr-x | 764/CH12/EX12.3.b/solution12_3.sce | 28 |
2 files changed, 84 insertions, 0 deletions
diff --git a/764/CH12/EX12.3.b/result12_3.txt b/764/CH12/EX12.3.b/result12_3.txt new file mode 100755 index 000000000..50bbbf19c --- /dev/null +++ b/764/CH12/EX12.3.b/result12_3.txt @@ -0,0 +1,56 @@ +-->//(Brakes) Example 12.3
+
+-->//Mass m (kg)
+
+-->m = 2500
+ m =
+
+ 2500.
+
+-->//Initial velocity of the mass v1 (m/s)
+
+-->v1 = 1.5
+ v1 =
+
+ 1.5
+
+-->//Mass of the drum M (kg)
+
+-->M = 50
+ M =
+
+ 50.
+
+-->//Radius of gyration of the drum k (m)
+
+-->k = 0.7
+ k =
+
+ 0.7
+
+-->//Mass is brought to rest in a distance of h (m)
+
+-->h = 0.5
+ h =
+
+ 0.5
+
+-->//Radius of the drum R (m)
+
+-->R = 0.75
+ R =
+
+ 0.75
+
+-->//Final velocity of the mass v2 (m/s)
+
+-->v2 = 0
+ v2 =
+
+ 0.
+
+
+Energy absorbed by the brakes(E) = 15124.000000 J
+
+Torque capacity of the brakes(Mt) = 22686.000000 N-m
+
\ No newline at end of file diff --git a/764/CH12/EX12.3.b/solution12_3.sce b/764/CH12/EX12.3.b/solution12_3.sce new file mode 100755 index 000000000..eb0ea4c1e --- /dev/null +++ b/764/CH12/EX12.3.b/solution12_3.sce @@ -0,0 +1,28 @@ + +//Obtain path of solution file +path = get_absolute_file_path('solution12_3.sce') +//Obtain path of data file +datapath = path + filesep() + 'data12_3.sci' +//Clear all +clc +//Execute the data file +exec(datapath) +//Calculate the KE of the mass KEmass (J) +KEmass = 0.5 * m * (v1^2 - v2^2) +//Calculate the initial velocity of the drum w1 (rad/s) +w1 = v1/R +//Calculate the final velocity of the drum w2 (rad/s) +w2 = v2/R +//Calculate the KE of the drum KEdrum (J) +KEdrum = 0.5 * M * k^2 * (w1^2 - w2^2) +//Calculate the PE of the mass PEmass (J) +PEmass = m * 9.81 * h +//Calculate the total energy absorbed by the brakes E (J) +E = KEmass + KEdrum + PEmass +//Calculate the angle through which the drum rotates during the braking period theta (rad) +theta = (h/R) +//Calculate the torque capacity of the brake Mt (N-m) +Mt = E/theta +//Print results +printf("\nEnergy absorbed by the brakes(E) = %f J\n",E) +printf("\nTorque capacity of the brakes(Mt) = %f N-m\n",Mt) |