Standard Science Primary 6 Interactions

Ravi wants to reduce the friction between a heavy wooden crate and the floor to move it more easily. Which of the following methods would be the most effective?

A Using a rougher surface for the floor.
B Increasing the surface area of the crate in contact with the floor.
C Placing rollers underneath the crate.
D Adding more weights into the crate.
Show Worked Solution

Worked Solution

Step 1: Identify the goal (reduce friction). Step [2-9]: Rollers convert sliding friction into rolling friction. Step [2-9]: Rolling friction is much lower than sliding friction, making the crate easier to move.

Correct answer: Placing rollers underneath the crate.

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