While John is traveling along a straight interstate highway , he notices that the mile marker reads 248 km. John travels until h
e reaches the 149 km marker and then retraces his path to the 167 km marker . What is John's resultant displacement from the 248 km marker
1 answer:
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Answer:
48.7 J
Explanation:
For a mass-spring system, there is a continuous conversion of energy between elastic potential energy and kinetic energy.
In particular:
- The elastic potential energy is maximum when the system is at its maximum displacement
- The kinetic energy is maximum when the system passes through the equilibrium position
Therefore, the maximum kinetic energy of the system is given by:
where
m is the mass
v is the speed at equilibrium position
In this problem:
m = 3.6 kg
v = 5.2 m/s
Therefore, the maximum kinetic energy is:
