1) A food server is holding a 2 kg food tray as shown. Estimatethe torque with respect to an axis through his shoulder exerted bythe force of the tray on his hand. Explain.
[Note that I am not asking you for the nettorque, just the torque from one force (the tray pushing on hishand).]
2)You can probably stand flatfooted on the floor and then riseup and balance on your tiptoes. Why are you unable to do this ifyou stand so your toes are touching a wall? (Try it!) Use physicsfrom this chapter to explain.
3)When a ladder leans against a wall (and stays put) there areat least 4 forces on the ladder.
a) Describe them, including the object causing the force and theobject the force acts on.
b) If you lean the ladder down too low it will slide and fall.Describe why this occurs in good physics terms
