11-Calculating Work Begin Date: 10/17/2017 11:00:00 AM Due Date: 10/22/2017 10:5

Question

11-Calculating Work Begin Date: 10/17/2017 11:00:00 AM Due Date: 10/22/2017 10:50:00 AM End Date: 1026/2017 10:50:00 AM (4%) Problem 13: Consider a ball of mass m attached to a string of length L, which is being spun around in a horizontal circle as shown in the figure. This image is shown from above, so gravity is acting into the page theexpertta.com How much work is the string doing on the ball, if it moves with a constant velocity y Grade Summary Deductions Potential 100% - Submissions (2% per attempt) detailed view 12 3 Hint 99A4 i Hints: 2% deduction per hint. Hints remaining 1 Feedback: 0% deduction per feedback. All costent 201 Exprt TA

Explanation / Answer

Result : Work done (W)=0

Explanation:

We know that work done (W)= F|| .d

The acceleration and the force is always pointed towards center of the circle but the velocity and direction of displacement is always perpendicular to that. Since there is no component of force that is parallel to displacement , hence there is no work done.

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