Find the radius of curvature of the curve r=t°i+ 2t´j- - tk at the point where t= 1

Trigonometry (MindTap Course List)
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ISBN:9781337278461
Author:Ron Larson
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Chapter6: Topics In Analytic Geometry
Section6.6: Parametric Equations
Problem 5ECP: Write parametric equations for a cycloid traced by a point P on a circle of radius a as the circle...
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Can I please get help with the 2 parts of the question

 

1a)
Find the radius of curvature of the curve r=t°i + 2t´j– tk at the point where t= 1.
-
The radius of curvature of the curve r=t°i+2t²j- tk at the point where t = 1 is
(Type an exact answer.)
1b)
A frictionless highway turn is circular with radius 20 metres is banked at an angle of 16°.
What will be the maximum posted speed for the turn to the nearest km/h?
You may assume the gravitational acceleration is equal to 9.8 m/s.
Maximum Posted Speed v=
km/h
Transcribed Image Text:1a) Find the radius of curvature of the curve r=t°i + 2t´j– tk at the point where t= 1. - The radius of curvature of the curve r=t°i+2t²j- tk at the point where t = 1 is (Type an exact answer.) 1b) A frictionless highway turn is circular with radius 20 metres is banked at an angle of 16°. What will be the maximum posted speed for the turn to the nearest km/h? You may assume the gravitational acceleration is equal to 9.8 m/s. Maximum Posted Speed v= km/h
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