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Calculate the mass m needed in order to suspend the leg

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli ISBN: 9780130606204 3

Solution for problem 3P Chapter 9

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

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Problem 3P

Calculate the mass m needed in order to suspend the leg shown in Fig. 9–43. Assume the leg (with cast) has a mass of 15.0 kg, and its CG is 35.0 cm from the hip joint; the sling is 80.5 cm from the hip joint.

FIGURE 9–43

Step-by-Step Solution:

Step 1 0f 3 impulse is the measure of how much the force changes the momentum of an object. Impulse= force ×time= F × t p And we know that F = t So Impulse is J = p J =p fp i p =m(v) mfv) i Step 2 of 3 Given m=120 g=120× 10 3 kg=0.1 (v) = o m/s i (v) f 7.5 m/s p=m(v) mfv) i =(0.12×45 )-(0.12×0 ) =0.9 kg.m/s Thus the impulse applied to the ball by the racket is 0.9 kg.m/s

Step 3 of 3

Chapter 9, Problem 3P is Solved
Textbook: Physics: Principles with Applications
Edition: 6
Author: Douglas C. Giancoli
ISBN: 9780130606204

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Calculate the mass m needed in order to suspend the leg

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