The potential energy for a force field 
is given by U (x, y) = sin (x + y). The force acting on the particle of mass m at 
is
A
1
B
C
D
0
Text Solution
Verified by ExpertsThe correct answer is:
A
= cos (x + y),
= cos (x + y)
= – cos (x + y) 
– cos (x + y) 
= – cos (0 + 
) 
– cos (0 + 
) 
| 
| = 1
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