Spiderman (mass = 76 kg) travels by swinging himself on a rope-like web that he attaches...
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Spiderman (mass = 76 kg) travels by swinging himself on a rope-like web that he attaches to tall buildings. In the diagram below, Spiderman is momentarily stopped in midair as he switches arms and webs at the top of one swing. He then swings in a 12-m radius circular arc, speeding up to 10 m/s when he gets to the bottom of his swing after swinging through an angle of 55. a. What tension must the web have at the top of the swing so his acceleration is purely in the tangential direction, so he travels in the circular arc? (Hint: That means the radial component of his net force must be 0.) b. What tension must the web have to support Spiderman as he reaches the bottom of his swing? (Hint: His acceleration is NOT 0 at this point.) c. If he does not want the web to stretch by more than 1 cm as he swings, what is the minimum effective spring constant of the web? 55 |Vbottom] = 10 m/s Vtop = 0 Spiderman (mass = 76 kg) travels by swinging himself on a rope-like web that he attaches to tall buildings. In the diagram below, Spiderman is momentarily stopped in midair as he switches arms and webs at the top of one swing. He then swings in a 12-m radius circular arc, speeding up to 10 m/s when he gets to the bottom of his swing after swinging through an angle of 55. a. What tension must the web have at the top of the swing so his acceleration is purely in the tangential direction, so he travels in the circular arc? (Hint: That means the radial component of his net force must be 0.) b. What tension must the web have to support Spiderman as he reaches the bottom of his swing? (Hint: His acceleration is NOT 0 at this point.) c. If he does not want the web to stretch by more than 1 cm as he swings, what is the minimum effective spring constant of the web? 55 |Vbottom] = 10 m/s Vtop = 0
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Related Book For
Fundamentals of biochemistry Life at the Molecular Level
ISBN: 978-0470547847
4th edition
Authors: Donald Voet, Judith G. Voet, Charlotte W. Pratt
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