Advanced Science Primary 6 Interactions

A block was placed on a ramp. Even though the ramp was tilted at an angle, the block did not slide down. Which of the following explains this observation?

A The frictional force was greater than the gravitational force pulling it down the slope.
B The block has no mass.
C There was no gravitational force acting on the block.
D The surface of the ramp was too smooth.
Show Worked Solution

Worked Solution

Step 1: Gravitational force pulls the block down the slope. Step 2: Frictional force between the block and the ramp opposes this motion. Step 3: If the block remains stationary, the frictional force is sufficient to overcome the component of gravity pulling it down.

Correct answer: The frictional force was greater than the gravitational force pulling it down the slope.

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