Overview
I'm working on a physics question and need an explanation and answer to help me learn.
Liam (32 kg) is sitting on a 2.0 kg sled attached to a second 2.0kg sled with Laci (28 kg) which is pulled by Dad using a rope pulled at an angle of 25° above the horizontal. If the coefficient of kinetic friction between the sleds and the snow is 0.12, calculate the force Dad must be pulling with to accelerate the kids at 1.5 m/s2.