Standard Science Primary 6 Interactions

Ravi is pushing a crate across a rough floor. Which of the following changes would INCREASE the frictional force acting on the crate?

A Applying oil to the floor
B Using a trolley with wheels
C Adding more items into the crate
D Pushing the crate on a smoother surface
Show Worked Solution

Worked Solution

Step 1: Frictional force depends on the roughness of surfaces and the weight of the object. Step [2-9]: Adding items increases the weight of the crate. Step [2-9]: A heavier object presses harder against the floor, increasing the frictional force.

Correct answer: Adding more items into the crate

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