Standard Science Primary 6 Interactions

Ravi is pushing a heavy box across a carpeted floor. He finds it difficult to move. What can he do to reduce the frictional force?

A Place the box on a trolley with rollers
B Push the box more slowly
C Add more weight to the box
D Use a rougher carpet
Show Worked Solution

Worked Solution

Step 1: Friction depends on surface roughness and weight. Step [2-9]: Rollers reduce the contact area and convert sliding friction to rolling friction, which is lower.

Correct answer: Place the box on a trolley with rollers

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