Two children are carrying a 2.00-m long uniform level board with a mass 5.00 kg, each supporting one end of the board. A 1.00-kg book is resting on the board a distance 1.20 m from one end of the board. What is the force applied by the child that is closer to the book to support the board?
A) 29.4 N downward
B) 58.9 N upward
C) 29.4 N upward
D) 30.4 N upward
E) 3.10 N upward
Correct Answer:
Verified
Q20: FIGURE 12-2 Q21: The maximum elongation of a typical metal Q22: FIGURE 12-3 Q23: Stress is Q24: The region from the origin to the Q26: A non-uniform, 80-g, meter stick balances when Q27: Two people are lifting a 2.0-m wide, Q29: A 3.00-m long plank of negligible mass Q30: A 2.00-m long uniform beam of mass Q35: A meter stick balances at the 50.0-cm
A)the strain per unit length.
B)the same
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