ok i think i got that last one thank you, as for my other problem i haven't a clue to figure it. For Tension do i just put T= (m1m2m3/m1+m2+m3)g? and what do i do to find acceleration?
im sorry i must be a complete idiot but i really cannot figure this out. I find that F= -kx. So For the first one do i multiply the 4kg weight by 9.8 to get Newtons and then divide by 10cm but convert that to meters so .1 meters. So 4kg (9.8) = 39.2 / .1 = 392 N/m is -k?
I have two homework problems i need help with one is:
1) A 4kg load is hanging on the bottom of a vertically positioned spring that stretches 10 cm down. Find K of the sping.
2) There are three blocks connected by a string. m1 is 10 kg, m2 is 20kg.
m1, and m2 are connected at the top of a...