In doing the work sheets remember that we were a little sloppy in class. Its not F = Ma it's Fnet = Ma or a + Fnet/ M. For example, if I have a 2 kg mass being pushed by a 4 N force to the north and an 8 N force to the south, the net force on it is 4 N to the south and the acceleration is 4N / 2kg = 2 m/s/s to the south.
Remember the force of gravity, i.e. the weight, = Mg and is down and has to be taken into account when figuring out what the net force is.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment