Problem 56P

A 1.34-kg object moves along the x axis, subject to the potential energy shown in Figure. If the object’s speed at point C is 1.25 m/s, what are the approximate locations of its turning points?

FIGURE

Solution 56P

Step 1 of 2

We have to find the approximate locations of turning points for an object whose speed at point on the potential energy curve is 1.25 m/s.

Mechanical energy of the object is conserved, so that the total energy at is equal to the total energy at point

Now,

m/s

and J (At from figure )

Hence,

=

=

= 7.0 J