Multiple Choice
The mass in the figure below slides on a frictionless surface.When the mass is pulled out,spring 1 is stretched a distance x1 from its equilibrium position and spring 2 is stretched a distance x2.The spring constants are k1 and k2 respectively.The force pulling back on the mass is:
A) −k2x1.
B) −k2x2.
C) −(k1x1 + k2x2) .
D) .
E) .
Correct Answer:

Verified
Correct Answer:
Verified
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