Standard Science Primary 6 Interactions

Ravi is pushing a heavy crate across a carpeted floor. He finds it difficult. Which of the following would make it EASIER for him to move the crate?

A Removing the carpet to reveal a polished wooden floor.
B Using a crate with a rougher bottom surface.
C Adding more weights inside the crate.
D Pushing the crate with a smaller force.
Show Worked Solution

Worked Solution

Step 1: Friction opposes the motion of the crate. Step [2-9]: A carpeted surface is rougher and provides more friction than a polished wooden floor. Step [2-9]: Reducing the friction makes it easier to push the crate.

Correct answer: Removing the carpet to reveal a polished wooden floor.

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