To determine The work done by the gravitational force. Explanation Given that the initial position of the ball r i → is 〈 0 , 30 , 0 〉 m , the final position r f → is 〈 25 , 0 , 0 〉 m and gravitational force F → is 〈 0 , − m g , 0 〉 N . Write the equation for displacement vector, r → = r f → − r i → (I) Here, r f → is the final position of the ball and r i → is the initial position of the ball. Write the equation for work done, W = F → ⋅ r → (II) Here, F → is the gravitational force and r → is the displacement. Conclusion: Substitute 〈 0 , 30 , 0 〉 m for r i → and 〈 25 , 0 , 0 〉 m for r i → in equation (I) to find the displacement

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ISBN: 9781119552796

Author: CHABAY

Publisher: WILEY

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Chapter 6, Problem 21P

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The work done by the gravitational force.

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Chapter 6, Problem 20P

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