Standard Science Primary 6 Interactions

Ravi placed a block on a ramp. Even though the ramp was tilted, the block did not slide down. Why?

A The block had too much mass to move.
B The ramp was too smooth.
C The frictional force between the block and the ramp was equal to the gravitational pull down the slope.
D There was no gravitational force acting on the block.
Show Worked Solution

Worked Solution

Step 1: Gravity pulls the block down the slope. Step 2: Friction between the block and ramp surface opposes this motion. Step 3: If the forces are balanced, the block remains stationary.

Correct answer: The frictional force between the block and the ramp was equal to the gravitational pull down the slope.

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