Standard Science Primary 6 Interactions

Which of the following is a way to REDUCE the frictional force between a moving crate and the floor?

A Increasing the weight inside the crate
B Placing rollers under the crate
C Using a floor with more grip
D Using a crate with a rougher base
Show Worked Solution

Worked Solution

Step 1: Friction is caused by surface contact. Step [2-9]: Rollers convert sliding friction into rolling friction. Step [2-9]: Rolling friction is much lower than sliding friction, making it easier to move.

Correct answer: Placing rollers under the crate

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free