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4. Problem soiving with conservation of angular momentum Practice: A student, sitting on a stool holds masses in each hand. When his arms are extended, the total rotationai inertia of the system is 5.6 kg-m2. When he pulls his arms in ciose to his body, he reduces the total rotational inertia to 1.4 kg-m2. When he is rotating with his hands held close to his body, his rotational velocity is 48 RPM. If there are no external torques, what is the rotational velocity of the system when he extends his arms?

4. Problem soiving with conservation of angular momentum Practice: A student, sitting on a stool holds masses in each hand. When his arms are extended, the total rotationai inertia of the system is 5.6 kg-m2. When he pulls his arms in ciose to his body, he reduces the total rotational inertia to 1.4 kg-m2. When he is rotating with his hands held close to his body, his rotational velocity is 48 RPM. If there are no external torques, what is the rotational velocity of the system when he extends his arms?

College Physics
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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Question 4 from my study guide please how do i solve
4. Problem soiving with conservation of angular momentum Practice: A student, sitting on a stool holds masses in each hand. VWhen his arms are extended, the total rotationai inertia of the system is 5.6 kg-m?. When he puils his arms in ciose to his body, he reduces the total rotational inertia to 1.4 kg m2. When he is rotating with his hands held close to his body, his rotational velocity is 48 RPM. If there are no external torques, what is the rotational velocity of the system when he extends his arms? 5. Problem solving with pressure Practice: A 130-lb woman puts all of her weight on one heel of her high-heeled shoes. The heel has an area of 0.25 in'. What is the pressure that her heel exerts on the ground in pounds per square inch (psi)? III. Formulas Sheet (will also be included in your test) Work = Change of KE = KEfinal - KEinitial V Impulse = Change of momentum Pinitial - Pfinal Linear Momentum = m Angular Momentum 7 = 1 Impulse = FAt Torque 7 = Id %3D Torque T = F\ Aw Angular acceleration a = t.
Transcribed Image Text:4. Problem soiving with conservation of angular momentum Practice: A student, sitting on a stool holds masses in each hand. VWhen his arms are extended, the total rotationai inertia of the system is 5.6 kg-m?. When he puils his arms in ciose to his body, he reduces the total rotational inertia to 1.4 kg m2. When he is rotating with his hands held close to his body, his rotational velocity is 48 RPM. If there are no external torques, what is the rotational velocity of the system when he extends his arms? 5. Problem solving with pressure Practice: A 130-lb woman puts all of her weight on one heel of her high-heeled shoes. The heel has an area of 0.25 in'. What is the pressure that her heel exerts on the ground in pounds per square inch (psi)? III. Formulas Sheet (will also be included in your test) Work = Change of KE = KEfinal - KEinitial V Impulse = Change of momentum Pinitial - Pfinal Linear Momentum = m Angular Momentum 7 = 1 Impulse = FAt Torque 7 = Id %3D Torque T = F\ Aw Angular acceleration a = t.
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