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A crane is lifting a wrecking ball supported by a 25 m long, 2.1 cm diameter...

A crane is lifting a wrecking ball supported by a 25 m long, 2.1 cm diameter steel cable (Ultimate Strength = 580 MN/m2). The mass of the wrecking ball is 740 kg. The modulus of elasticity of the cable is 570x103 MN/m2.

1. When the wrecking ball is stationary, by how much is the cable stretched?
(include units with answer)

2. If the wrecking ball is accelerating down at 3.4 m/s2, by how much is the cable stretched?
(include units with answer)

3. If the wrecking ball is accelerating up at 3.4 m/s2, by how much is the cable stretched?
(include units with answer)

4. For the three cases examined in parts A-C, what is the minimum factor of safety?

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