Posted by Megan on Sunday, January 30, 2011 at 7:29pm.
Hey, you try first.
I have already and the answers I submit is wrong.
If M does not accelerate, then T ≤ μsN I
M will accelerate if T exceed μsN I
The NET force on M (if M does not move) is T C
N equals Mg C
T equals μsN if M remains at rest C
M will accelerate if T exceeds μkN I
If M does not accelerate, then T ≤ μsN I
If it is already moving then it may accelerate with T < musN so I agree false
---------------------------
M will accelerate if T exceed μsN I
Yes it will because it will start and then the force is greater than needed for a constant speed. I say True
---------------------------------
The NET force on M (if M does not move) is T C
NO, if it does not accelerate the NET force is zero. (the friction exactly balances T) False
--------------------------
N equals Mg C
Yes, correct
-----------------------
T equals μsN if M remains at rest C
False, T = mus N only at the point where it starts to move. For smaller T, mus N is greater than T
------------------------------------
M will accelerate if T exceeds μkN I
True if and only if the mass is already moving.
Those answers are coming up as wrong too. This problem is really frustrating me. I don't know what else to do.
I got this exact homework but my questions are slightly different. Maybe it can help u or some one else.
N equals Mg [Correct]
If M does not accelerate, then T ≤ μsN [Correct]
M will accelerate if T exceed μsN [Correct]
The NET force on M (if M does not move) is μkN [Incorrect]
M will accelerate if T exceeds μkN [Incorrect]
T equals μsN if M remains at rest [Incorrect]