A robot arm that controls the position of a

video camera in an automated surveillance

system is manipulated by a servo motor that

exerts a force on a push-rod. The force is

given by

F(x) = (18.6 N/m2) x2 ,

where x is the position of the end of the push-

rod.

If the push-rod moves from x1 = 1.5 m to

x2 = 4 m, how much work did the servo motor

do?

Answer in units of J

video camera in an automated surveillance

system is manipulated by a servo motor that

exerts a force on a push-rod. The force is

given by

F(x) = (18.6 N/m2) x2 ,

where x is the position of the end of the push-

rod.

If the push-rod moves from x1 = 1.5 m to

x2 = 4 m, how much work did the servo motor

do?

Answer in units of J

## This question was asked on Jan 17, 2013.

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