Imagine a spring made of a material that is not very elastic, so that the spring force does not satisfy hooke’s law, but instead satisfies the equation f = −α x + β x3 , where α = 10 n/m and β = 850 n/m3. calculate the work done by the spring when it is stretched from its equilibrium position to 0.15 m past its equilibrium. answer in units of mj.

W= 4.92mJ

Explanation:

the work is calculated by:

where is the stretch of the spring, the unstrech position of the sprinf and F the force applied.

so:

finally:

W= 4.92mJ

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.  

this would be about 43%