4.A proposal for a “Smart" car seat operates by detecting the weight of thepassenger and comparing against various thresholds. If the weight of the passenger isbelow 15 kg, the car would prevent deployment of an air bag in a collision. A standard"passenger" has a weight of >50 kg. The empty seat weighs 25 kG.The weight sensor is constructed with a strain gauge placed in one of the 4 “feet" of thecar seat. In this position, it detects exactly 1/4 of the weight of the car seat plus thepassenger. It consists of a structure that has a pre-assembly length of 1 cm, and astiffness of 1,000,000 N/m. A metal film strain gauge with a nominal resistance of 10 kNand a gage factor of 2.0 is attached to this structure so that the weight of the car seatcauses tensile strain in the strain gauge that is the same magnitude as the strain in the feet.a)If the unloaded length of the "foot" is 1 cm, what is the length when seat ismounted after the installation?If a 50 kG passenger sits in the seat, what is the length of the gage?What range of resistance values are expected for a collection of passengers?The car can experience large temperature changes. On a cold day in the Midwestthe empty seat resistance values may be as much as 4% higher than on a hot dayin the southwest. How significant is this problem.What might happen to the output of these sensors if the car is going around a turnat an intersection?b)d)e)f)If the car is parked on a steep hill in San Francisco (20 degree angle relative to thehorizontal), what impact might this have?

Given The answer is given below.

4. A proposal for a “Smart" car seat operates by detecting the weight of the passenger and comparing against various thresholds. If the weight of the passenger is below 15 kg, the car would prevent deployment of an air bag in a collision. A standard "passenger" has a weight of >50 kg. The empty seat weighs 25 kG.

4. A proposal for a “Smart" car seat operates by detecting the weight of the passenger and comparing against various thresholds. If the weight of the passenger is below 15 kg, the car would prevent deployment of an air bag in a collision. A standard "passenger" has a weight of >50 kg. The empty seat weighs 25 kG.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.23P: Using the information in Problem 1.22, estimate the ambient air temperature that could cause...

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