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Understanding Work in Physics through Ice Skating and Everyday Scenarios

This document explores various scenarios involving work done in physics, particularly focusing on an ice skater's movements and lifting objects. It calculates the work done by the ice skater's partner while lifting and carrying her and considers additional situations such as lifting a gym bag and the actions of a mother lifting her twin babies. Additionally, there are examples involving pulling a sled and lifting a backpack, followed by a crane lifting a boulder, highlighting the principle of work in different contexts.

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Understanding Work in Physics through Ice Skating and Everyday Scenarios

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Presentation Transcript

  1. Drills on WORK

  2. An ice skater glides for two meters across ice.

  3. The ice skater’s partner lifts her up a distance of 1 meter.

  4. The ice skater’s partner carries her across the ice a distance of 3 meters.

  5. After setting her down, the ice skater’s partner pulls her across the ice a distance of 10 meters.

  6. After skating practice, the ice skater lifts her 20-newton gym bag up 0.5 meter.

  7. Solve the following

  8. How much work does a mother do if she lifts each of her twin babies upward 1 meter? Each baby weighs 90N.

  9. You pull your sled through the snow a distance of 500 meters with a horizontal force of 200N. How much work did you do?

  10. You did 150 J of work by lifting up your 5kg backpack. How high did you lift the backpack?

  11. A crane does 62,500 joules of work to lift a boulder a distance of 25.0 meters. How much is the mass of the boulder?

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