Standard Science Primary 6 Interactions

Jun Jie wants to push a heavy crate across a floor. Which of the following methods will make it EASIER for him to push the crate?

A Using a rougher wooden plank
B Using a trolley with wheels
C Adding more weight into the crate
D Sprinkling some sand on the floor
Show Worked Solution

Worked Solution

Step 1: To make pushing easier, we must reduce the frictional force opposing the motion. Step 2: Wheels convert sliding friction into rolling friction, which is much lower. Step 3: Final Answer: Using a trolley with wheels.

Correct answer: Using a trolley with wheels

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