Here is an image for better illustration,
I only managed to solve for (a) but I'm not sure if I did it right. As for (b) and (c), I have no idea how to do it.
My answer for (a):
=> Ki + Ui + Wext = Kf + Uf
=> 0+mgh1-LμmgCosΘ = 1/2mv^2 + mgh2
=>1/2v^2 = gh1- gh2 - LμgCosΘ
=> V = √2g(h1 - h2 -...
Can someone help me with letter (f). Where did the Wt = Kf - ki come from? Is it from the conservation of energy formula K1 + U1 + Wext = K2 + U2. if yes then how did U1 and U2 become 0? I assume U1 is zero because the suitcase is on the ground but for U2 isn't the suitcase on the plane? so...
Hi if I may ask, I quite don't understand letter (f). Where did the Wt = Kf - ki come from? Is it from the conservation of energy formula K1 + U1 + Wext = K2 + U2. if yes then how did U1 and U2 become 0? I assume U1 is zero because the suitcase is on the ground but for U2 isn't the suitcase on...