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Question:

Discuss weather any work is being done by each of the following agents, and if so, wether the work is positive?

Discuss weather any work is being done by each of the following agents, and if so, whether the work is positive or negative.a) a chicken scratching the ground b) a person reading a signc) a crane lifting a bucket of concreted) the force of gravity on the bucket in (c)

Answer:

If the chicken is accelerating small rocks and pieces of dirt, then a) is positive(a force is accelerating mass and moving it a distance d in the direction of the force) b) no physical work, although many student (you included?) might suffer mental workc) YUP! and positive (read your textbook)d) YUP! and negative (read your textbook).
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