Gradually increase the angle of the incline, but keep the angle low enough that the block does not slide. Select all the phrases below that would make the following statement true: For this situation, as the angle is increased
the maximum possible value of the force of static friction increases.
the force of static friction increases.
the maximum possible value of the force of static friction decreases.
the force of static friction decreases.
the force of static friction stays the same.
the maximum possible value of the force of static friction stays the same.
(b) Now change the mass of the block. Select all the phrases below that would make the following statement true: As the mass is increased
the force of friction decreases.
the force of friction increases.
the maximum possible value of the force of friction increases.
the force of friction stays the same.
the maximum possible value of the force of friction decreases.
the maximum possible value of the force of friction stays the same.
the minimum angle at which the block will slide decreases.
the minimum angle at which the block will slide increases.
For this situation, as the angle is increased:
- the maximum possible value of the force of static friction stays the same.
- the force of static friction stays the same.
Now, for changing the mass of the block:
- the force of friction increases.
- the maximum possible value of the force of friction increases.
- the minimum angle at which the block will slide increases.
For the first statement regarding the angle of the incline:
The correct phrases to select are:
- the maximum possible value of the force of static friction increases.
- the force of static friction stays the same.
As the angle of the incline is increased but kept below the sliding angle, the maximum possible value of the force of static friction increases. This means that the surface is able to exert a stronger force to prevent the block from sliding.
However, the force of static friction itself remains the same because it adjusts to match the force applied by the incline.
For the second statement regarding the mass of the block:
The correct phrases to select are:
- the force of friction increases.
- the maximum possible value of the force of friction increases.
- the minimum angle at which the block will slide increases.
As the mass of the block is increased, the force of friction between the block and the surface also increases. This is because there is more mass to resist the motion.
The maximum possible value of the force of friction also increases, as it is directly proportional to the force applied to the block.
Furthermore, the minimum angle at which the block will slide also increases. This is because the increased force of friction allows the block to resist sliding at steeper angles.
Therefore, the correct phrases indicate that as the mass is increased, both the force of friction and the maximum possible value of the force of friction increase, while the minimum angle at which the block will slide also increases.
a. The force of static friction decreases.
b. The force of friction increases.
The max. possible value of the force of friction increases.
The max. angle at which block will slide decreases.
Force of friction decreases
The minimum angle at which the block will slide decreases