M mia New member Jun 16, 2009 #1 is most applicable here? Your empty hand is not hurt when it bangs lightly against a wall.
A akm69 New member Jun 16, 2009 #2 The third law :- F12 = F21 As you carry heavy load the force applied by your hand has effect on your hand joints & muscles,beyond capacity it hurts you.
The third law :- F12 = F21 As you carry heavy load the force applied by your hand has effect on your hand joints & muscles,beyond capacity it hurts you.
