Question
(a) from x = 0 to x = 2 m
1_________= J
(b) from x = 2 m to x = 3 m
2_________= J
(c) from x = 0 to x = 3 m
3 _________= J
A child applies a force F vector across the following intervals. (a) from x = 0 to x = 2 m 1_________= J (b) from x = 2 m to x = 3 m 2_________= J (c) from x = 0 to x = 3 m 3 _________= J Calculate the work done by the force F vector parallel to the x-axis to a 10.0-kg sled moving on the frozen surface of a small pond. As the child controls the speed of the sled, the x-component of the force she applies varies with x-coordinate of the sled as shown in the figure below. The vertical step size is 2 N and the horizontal step size is 1 m.
Explanation / Answer
a> 4 N-m
b> 2 N-m but acting in opposite direction
c> 2N-m