question archive At the local playground, a 16 kg child sits on the end of ahorizontal teeter-totter, 1
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At the local playground, a 16 kg child sits on the end of ahorizontal teeter-totter, 1.5m from the pivot point. On the otherside of the pivot an adult pushes straight down on theteeter-totter with a force of 95 N. In which direction does theteeter-totter rotate if the adult applies the force of a distance(a) 3.0 m, (b) 2.5 m, or (c) 2.0 m from the pivot?
Answer:
HT Realm was right in saying that the child moves upward in the first two questions and downward in the third question. Simply translate them to the terminology provided in your given scenario and say that:
A) COUNTERCLOCKWISE
285 N*m > 235.2 N*m which means the teeter-totter rotates counterclockwise
B) COUNTERCLOCKWISE
237.5 N*m > 235.2 N*m which means the teeter-totter rotates counterclockwise
C) CLOCKWISE
190 N*m < 235.2 N*m which means the teeter-totter rotates clockwise