Standard Science Primary 6 Interactions

Siti observed that it is much harder to push a heavy box across a carpeted floor than a tiled floor. Which of the following best explains her observation?

A There is no friction acting on the box when it is on the tiled floor.
B The carpeted floor is rougher and exerts more frictional force on the box.
C The box has more mass when it is on the carpeted floor.
D The tiled floor is smoother and exerts more gravitational force on the box.
Show Worked Solution

Worked Solution

Step 1: Friction is a force that opposes motion between two surfaces in contact. Step 2: Rougher surfaces create more friction than smoother surfaces. Step 3: Carpet is rougher than tile, hence it exerts more friction, making it harder to push the box.

Correct answer: The carpeted floor is rougher and exerts more frictional force on the box.

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