7.1 Work Force (N) W = F x d Work (joules) Distance (m)

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Presentation transcript:

7.1 Work Force (N) W = F x d Work (joules) Distance (m)

7.1 Work When thinking about work, remember that work is done by forces that cause movement. If nothing moves (distance is zero), then no work is done.

Solving Problems How much work is done by a person who pulls a cart with a force of 50 newtons if the cart moves 20 meters in the direction of the force?

Looking for: Given: Relationships: Solution …work done by person Solving Problems Looking for: …work done by person Given: …force = 50 N (forward); …distance = 20 m Relationships: Work = force x distance Solution 50 N × 20 m = 1,000 joules.

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