- #1
bradsmith
- 7
- 0
So I was sick last week for 3 classes and I really missed something and don't know what I am doing.
Three blocks rest on a frictionless, horizontal table (see figure below), with m1 = 6 kg and m3 = 14 kg. A horizontal force F = 111 N is applied to block 1, and the acceleration of all three blocks is found to be 3.4 m/s2
(a) Find m2.
For this I got M2=12kg It was wrong
I did F=ma for both blocks
F=6x3.4=20.4
F=14x3.4=47.6
111-20.4-47.6=42.6
42.6/3.4=12
I think I have to use gravity 9.8?
(b) What is the magnitude of the normal force between blocks 2 and 3?
Three blocks rest on a frictionless, horizontal table (see figure below), with m1 = 6 kg and m3 = 14 kg. A horizontal force F = 111 N is applied to block 1, and the acceleration of all three blocks is found to be 3.4 m/s2
(a) Find m2.
For this I got M2=12kg It was wrong
I did F=ma for both blocks
F=6x3.4=20.4
F=14x3.4=47.6
111-20.4-47.6=42.6
42.6/3.4=12
I think I have to use gravity 9.8?
(b) What is the magnitude of the normal force between blocks 2 and 3?