in this case the area is = F t which is the impulse which is the change in momentum or m d(v) so approximate the area above and below the curve. My initial approx. +1000Ns 0s->2s approximate a triangle 1/2 B*h= 1/2 1000N*2s ~0Ns 2s->3s ZERO -500Ns 3s->4s approximate a rectangle A=B*h= 1s*-500N total~500Ns do the answer must be + and less than 1 ~ .1 dp = mdv * note d = delta
I had no idea how to approach this problem, so I guessed. Where do you start with this one?
ReplyDeletethis is an impulse area question...
ReplyDeleteFocus: Graphical analysis
Area=?
Slope=?
in this case the area is = F t which is the impulse which is the change in momentum or m d(v)
so approximate the area above and below the curve. My initial approx.
+1000Ns 0s->2s approximate a triangle 1/2 B*h= 1/2 1000N*2s
~0Ns 2s->3s ZERO
-500Ns 3s->4s approximate a rectangle A=B*h= 1s*-500N
total~500Ns do the answer must be + and less than 1 ~ .1 dp = mdv * note d = delta