2:45 PM Tue Apr 25 26%

2:45 PM Tue Apr 25 oo PH212-HW03- 00 @ 260/0 (OZ) x Apr3 Physic 212 > < Untitled Notebook (1) > < Apr5 Physic 212 > < Spring2023-DigitalVersion v 4/10 x PH212-HW01- Sprin.. x PH212 _HW02-Spri.. PH212-HW03-S... x CIIC 4. 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 430 below the horizontal. [20 pts] a. Calculate the torque caused by the dirt on the shovel. [4 pts] b. Calculate the torque from gravity puling on the I .Okg 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. [6 pts] d. Calculate the force from his u er hand. What is its direction u or down)? [6 pts] l('5) C cog 430) IT net (IS 1.1K q.gt cos sti2.qMm CDS 0-85 'tc.oq Nm z g,zqN (nee J c -tnetl 430