Question
Asked Oct 2, 2019

A 1200-kg car moving on a horizontal surface has speed v= 85 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?

check_circleExpert Solution
Step 1

The kinetic energy of the car is equal to the energy stored in spring through compression.

Write the expression for the kinetic energy of the car.

m is the mass of the car
(I)
car
is the velocity of the car
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m is the mass of the car (I) car is the velocity of the car

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Step 2

Write the expression for the e...

k is the spring constant
_x is the dispalcement ofthe spring
CII)
К.
spring
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k is the spring constant _x is the dispalcement ofthe spring CII) К. spring

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