Add lab session 3

Handed in on 27 Oct 2020.

Change-Id: I00ae5f8e3910fa1ba0b2579e88894f3b5292fb1f
diff --git a/p3/data/exp4/fase2_5kg_12n_rapid.dat b/p3/data/exp4/fase2_5kg_12n_rapid.dat
new file mode 100644
index 0000000..10af50f
--- /dev/null
+++ b/p3/data/exp4/fase2_5kg_12n_rapid.dat
@@ -0,0 +1,15 @@
+0	28.4
+15	28.4
+30	28.4
+45	28.6
+60	29.2
+75	29.6
+90	29.8
+105	30.4
+120	31
+135	31.4
+150	31.4
+165	31.8
+180	31.8
+195	31.8
+210	31.8