In the figure,two identical springs have unstretched lengths of 0.25 m and spring constants of 300 N/m.The springs are attached to a small cube and stretched to a length L of 0.36 m as in Figure A.An external force P pulls the cube a distance to the right and holds it there.(See Figure B.)The work done by the external force P in pulling the cube is closest to
A) 0.12 J.
B) 0.060 J.
C) 6.0 J.
D) 12 J.
E) 0.80 J.

Question

In the figure,two identical springs have unstretched lengths of 0.25 m and spring constants of 300 N/m.The springs are attached to a small cube and stretched to a length L of 0.36 m as in Figure A.An external force P pulls the cube a distance  to the right and holds it there.(See Figure B.)The work done by the external force P in pulling the cube  is closest to 
A) 0.12 J. 
B) 0.060 J. 
C) 6.0 J. 
D) 12 J. 
E) 0.80 J.

Quizplus · Accepted Answer

The Answer of In the figure,two identical springs have unstretched lengths of 0.25 m and spring constants of 300 N/m.The springs are attached to a small cube and stretched to a length L of 0.36 m as in Figure A.An external force P pulls the cube a distance  to the right and holds it there.(See Figure B.)The work done by the external force P in pulling the cube  is closest to 
A) 0.12 J. 
B) 0.060 J. 
C) 6.0 J. 
D) 12 J. 
E) 0.80 J.

In the Figure,two Identical Springs Have Unstretched Lengths of 0