A horse is used to help stack hay in a barn. At the instant shown, the length of rope, r, is 7 m, the angle the rope makes with the horizontal is theta = 50°. The 750-kg horse is walking at a velocity of 1.5 m/s and is speeding up at a rate of 0.25 m/s². The mass of the bale is 60 kg. Determine at this instant, (a) the speed of the bale, (b) the tension in the rope (c) the average force between the ground and the horse's feet.

Fig: 1

Fig: 2

Fig: 3

Fig: 4

Fig: 5