Practice Questions
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How does increasing the angle of an incline affect the frictional force acting on an object resting on it?
When the slope is steeper, the weight pulls the object more toward the ground, which lowers the normal force that pushes against the surface. Other op...
When an object slides down a ramp made of rubber at a steep angle, how does the combination of the angle of incline and the material affect the frictional force experienced by the object?
The frictional force equals the coefficient of friction times the normal force. Other options are incorrect because People think the rubber fixes fric...
In a basketball game, players often pivot on one foot while dribbling. Which frictional force is primarily responsible for enabling this movement without slipping?
Static friction stops the foot from sliding when the player turns. Other options are incorrect because Kinetic friction happens when two surfaces slid...
An object with a mass of 10 kg is resting on a ramp inclined at 30 degrees. If the coefficient of static friction between the object and the ramp is 0.5, what is the maximum static frictional force that can act on the object before it begins to slide down the ramp?
Normal force equals weight times the cosine of the slope angle. Other options are incorrect because This answer assumes the full weight acts as static...
If a block weighing 20 kg is placed on a 45-degree incline, and the coefficient of static friction between the block and the incline is 0.6, what is the maximum angle at which the block can remain at rest without sliding down?
Static friction stops the block when the downhill pull is just equal to the friction force that can act. Other options are incorrect because Some thin...
When analyzing an object on an inclined plane, which factor most directly affects the frictional force acting on it?
Friction depends on how the two surfaces touch. Other options are incorrect because Some think the steepness of the slope makes friction bigger; Peopl...
Which of the following statements about friction forces in a sliding object on an inclined plane are true? Select all that apply.
The frictional force always moves opposite to how the object slides. Other options are incorrect because Many think the normal push stays the same whe...
In a scenario where a block is sliding down an inclined plane, the component of gravitational force acting parallel to the incline is given by _____, where m is mass, g is the acceleration due to gravity, and α is the angle of incline.
Gravity pulls straight down toward the center of the Earth. Other options are incorrect because Some people think the push from the surface, called th...
An object is sliding down an inclined plane and eventually comes to a stop. What is the primary cause of the object's deceleration as it moves down the slope?
The frictional force pushes back against the object's motion, so the block slows down. Other options are incorrect because A common idea is that gravi...
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