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torisob [31]
2 years ago
6

A 0. 75-kg ball is attached to a 1. 0-m rope and whirled in a vertical circle. The rope will break when the tension exceeds 450

n. What is the maximum speed the ball can have at the bottom of the circle without breaking the rope?
SAT
1 answer:
8090 [49]2 years ago
7 0

At the bottom of the circle, the ball is being pulled upward by tension in the rope and downward by its own weight, so that the net force on it is

∑ F = 450 N - (0.75 kg) g = (0.75 kg) a

where a is centripetal acceleration. At this maximum tension, the ball has a maximum centripetal acceleration of

a = (450 N - (0.75 kg) g) / (0.75 kg) = 590.2 m/s²

Then its maximum tangential speed v is such that

a = v² / (1.0 m)

⇒   v = √((1.0 m) a) ≈ 25 m/s

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The statements order from first to last about Milgram's late-1960s experiment are:

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<h3>What was Milgram experiment about?</h3>

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The experiment also shows that obedience is not inevitable. The Milgram experiment is a very popular psychological study that looks at the willingness of people to follow orders.

See full question below

Place in order, from first to last, the steps describing how a letter in Stanley Milgram’s late-1960s experiment reached its destination.- Each intermediate recipient repeats the process of the Lincoln resident.- Someone recognizes the final recipient as an acquaintance and sends or delivers the letter to him.- A person in Lincoln, Nebraska, is given a letter and a description of the intended recipient in Boston, but no address.- The Lincoln resident sends the letter to someone who might have a direct or indirect connection to the Boston recipient.

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