Forces (HSC SSCE Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What are the three primary forces on an object resting on an inclined plane?
What are the three primary forces on an object resting on an inclined plane?
Gravity, normal force, friction
In which direction does gravitational force act on an object on an inclined plane?
In which direction does gravitational force act on an object on an inclined plane?
Vertically downward
Why align axes parallel and perpendicular to the slope?
Why align axes parallel and perpendicular to the slope?
Only gravity needs decomposing
What is the parallel component of gravitational force on a slope at angle ?
What is the parallel component of gravitational force on a slope at angle ?
For an object in equilibrium on a slope at angle , what is the normal force?
For an object in equilibrium on a slope at angle , what is the normal force?
For static equilibrium parallel to the slope, what equals ?
For static equilibrium parallel to the slope, what equals ?
Static friction force
What happens as the incline angle increases for a stationary object?
What happens as the incline angle increases for a stationary object?
Larger friction force needed
What type of motion does the sliding analysis NOT apply to?
What type of motion does the sliding analysis NOT apply to?
Rolling objects
What is the critical angle?
What is the critical angle?
Angle where object just starts to slide
In the worked example, Harriet (21 kg) on a 35° slide has what friction force?
In the worked example, Harriet (21 kg) on a 35° slide has what friction force?
120 N