Posted by Liz on .
30. A truck of mass 2250 kg is used to pull a 330 kg trunk out of an old quarry as shown below. There is 550 N of rolling resistance for the truck. Ignore mass and friction of the pulley. (a) If the trunk is accelerated upward at 2.00 m/s2 what is the minimum amount of horizontal force the truck’s drive wheels exert on the ground? (b) For the same conditions what is the tension in the towrope?

Physics 
Elena,
m1=2250 kg, m2 =330 kg, R=550 N, a= 2 m/s²
m1•a=FRT
m2•a =T m2•g
a(m1+m2)=FRT+Tm2•g
F= a(m1+m2) +m2•g+R=...
T=m2(a+g)=…