A woman (50 kg) is pulling a wagon behind her. In the wagon is her daughter by her first marriage; the daughter and the wagon are 60 kg. (See figure.) The woman pulls the handle with a tension 200 N, and the handle makes a 30˚ angle with the horizontal. There is a horizontal force of friction, and the wagon moves at a constant 2 m/s. (Use g = 10 m/s2.)
What is the horizontal component of the gravitational force on the wagon and daughter?