Worksheet: The Workโ€“Energy Principle for a Variable Force

In this worksheet, we will practice using the work--energy principle to solve problems involving a moving particle under the action of a variable force.

Q1:

The figure shows the action of a variable force ๐น on a body of mass ๐‘š kg as it moves a distance ๐‘‘ . Given that ๐น is measured in newtons, and ๐‘‘ is measured in metres, find the change in the bodyโ€™s kinetic energy between ๐‘‘ = 0 m and ๐‘‘ = 6 m .

Q2:

The figure shows the action of a variable force ๐น on a body of mass ๐‘š kg as it moves a distance ๐‘‘ . Given that ๐น is measured in newtons, and ๐‘‘ is measured in metres, find the change in the bodyโ€™s kinetic energy between ๐‘‘ = 0 m and ๐‘‘ = 6 m .

Q3:

The figure shows the action of a variable force ๐น on a body of mass ๐‘š kg as it moves a distance ๐‘‘ . Given that ๐น is measured in newtons, and ๐‘‘ is measured in metres, find the change in the bodyโ€™s kinetic energy between ๐‘‘ = 0 m and ๐‘‘ = 6 m .

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