A 4.20 kg bucket of water is accelerated upward by a cord of negligible mass who

ID: 1529098 • Letter: A

Question

A 4.20 kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 73.0 N .

Part A

If the bucket starts from rest, what is the minimum time required to raise the bucket a vertical distance of 11.5 m without breaking the cord?

Express your answer with the appropriate units.

A 4.20 kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 73.0 N .

Part A

If the bucket starts from rest, what is the minimum time required to raise the bucket a vertical distance of 11.5 m without breaking the cord?

Express your answer with the appropriate units.

t =

Given Tension T = 73 N

mass m = 4.2 kg

the tension is given by

T = m(g + a)

73 = 4.2 * ((9.8 + a)

acceleration a = 7.58 m/s^2

part A)

from the equation

s = ut + 1/2 *a*t^2

11.5 = 0 + (1/2 * 7.58 * t^2)

t = 1.74 s

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