**Topic: Mechanics of a Wrecking Ball**Wrecking balls are used to demolish old buildings. Consider a 720 kg steel ball suspended from a 10-meter-long cable on a crane. A hook on the crane slowly pulls the ball back and then releases it. The ball’s speed at the lowest point in its arc, just before striking the building, is 4.5 m/s.---**Part A: Conceptual Question**At the lowest point in the ball’s arc:- The tension in the cable is less than \( mg \) because the ball is moving down.- The tension in the cable is equal to \( mg \) because tension and gravity are the only forces and they balance.- The tension in the cable is greater than \( mg \) because there has to be a net upward force.**Action:** Submit your answer and request a detailed explanation if needed.---**Part B: Calculation Question**What is the tension in the cable when the ball is at its lowest point? Express your answer with the appropriate units.- **Hint Available:** A hint is accessible to help guide you through the process of determining the tension in the cable.**Equation Field:**\[ T = \text{Value} \ \text{Units} \]**Action:** Input your calculated value and submit your answer for verification.--- This exercise involves understanding the dynamics of forces acting on a wrecking ball and calculating the tension in the supporting cable based on the given conditions.

Answered: Image /qna-images/answer/4b1cc53a-161e-4fee-8f6f-182e6986eb4c.jpg

Wrecking balls are used to demolish old buildings. A 720 kg steel ball is suspended from a 10-m-long cable on a crane. A hook on the crane slowly pulls the ball back, then releases it. The ball's speed at the lowest point in its arc, just before striking the building, is 4.5 m/s. At the lowest point in the ball's arc, O the tension in the cable is less than mg because the ball is moving down. O the tension in the cable is equal to mg because tension and gravity are the only forces and they balance. O the tension in the cable is greater than mg because there has to be a net upward force. Submit Part B Request Answer What is the tension in the cable when the ball is at its lowest point? Express your answer with the appropriate units. ▸ View Available Hint(s) Submit HA T= Value Units ?

Wrecking balls are used to demolish old buildings. A 720 kg steel ball is suspended from a 10-m-long cable on a crane. A hook on the crane slowly pulls the ball back, then releases it. The ball's speed at the lowest point in its arc, just before striking the building, is 4.5 m/s. At the lowest point in the ball's arc, O the tension in the cable is less than mg because the ball is moving down. O the tension in the cable is equal to mg because tension and gravity are the only forces and they balance. O the tension in the cable is greater than mg because there has to be a net upward force. Submit Part B Request Answer What is the tension in the cable when the ball is at its lowest point? Express your answer with the appropriate units. ▸ View Available Hint(s) Submit HA T= Value Units ?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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