The sprinter begins from rest at position A and accelerates along the track. If the stationary tracking camera at O is rotating at the rate of 12.8 deg/s when the sprinter passes the 61-m mark, determine the speed v of the sprinter and the counterclockwise value of r. 42 m 12 m

The sprinter begins from rest at position A and accelerates along the track. If the stationary tracking camera at O is rotating at the rate of 12.8 deg/s when the sprinter passes the 61-m mark, determine the speed v of the sprinter and the counterclockwise value of r. 42 m 12 m

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

The sprinter begins from rest at position A and accelerates along the track. If the stationary tracking camera at O is rotating
at the rate of 12.8 deg/s when the sprinter passes the 61-m mark, determine the speed v of the sprinter and the
counterclockwise
value of r.
42 m
12 m

Part 1
Calculate the distance r, the angle 8, and the rate of rotaion of the camera in rad/s.
Answers:
r=
8=
II
i 24.19
i 63.26
i
42 m
m
O
rad/s
12 m

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