2. A boy is digging a hole to plant a lemon tree. He lifts 1.20 kg of dirt with his 1.5m long shovel. He holds the shovel with one hand at the very top, and his other hand at 0.60m from the end, as shown in the picture. When he lifts the dirt, he pulls vertically upward with this lower hand and the shovel rotates around his upper hand. At one moment, he holds the shovel stationary, angled at 43 below the horizontal. [18 pts] a. Calculate the torque caused by the dirt on the shovel. [4 pts] b. Calculate the torque 'om gravity puling on the 1.0kg shovel. The center of mass of the shovel is 0.85m from its top. [4 pts] c. Calculate the force his bottom hands pulls straight up on the shovel. (Hint : how does the torque from his hand compare to the two torques you just found?) [4 pts] (1. Calculate the force from his upper hand. What is its direction (up or down)? [6 pts] P