Question

2072 Supp Q.No. 9b Two people are carrying a uniform wooden board that is 3m long and weighs 160N. If
one person applies an upward force equal to 60N at one end, at what point does the other person lift?
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Answer 1

Answer:

Explanation:

Length of the wooden board is L = 3.00m

Weight is W = 160N

One person applies the fprce 60N at one end.

The other person lifts the board with a force 160N - 60N

= 100N

Since the center of mass of the board is at 1.50m

Now taling the torques then (100N)(x) = (160N)(1.50)

x = ( 160N/100N)(1.50)

= 2.40m