A 60.0-kg man stands at one end of a 20.0-kg uniform 10.0-m long ...

[Beheh]

A 60.0-kg man stands at one end of a 20.0-kg uniform 10.0-m long board. How far from the man is the center of mass (or center of gravity) of the man-board system?
 
  A) 1.25 m
  B) 2.50 m
  C) 5.00 m
  D) 7.50 m
  E) 9.00 m

Question 2

An object has a volume of 4.0 m3 and weighs 40,000 N. What will its apparent weight be in water of density 1000 kg/m3?
 
  A) 40,000 N
  B) 39,200 N
  C) 9,800 N
  D) 800 N

[Brummell1998]

Answer to Question 1

A

Answer to Question 2

D