What must act away from each other to stretch an object?
Two forces must act away from each other.
What must act towards each other to compress an object?
Two forces must act towards each other.
What must act towards each other but not in a line to bend an object?
Two forces must act towards each other but not in a line.
What happens if masses are hung from a material?
They will extend.
What defines an elastic material?
If it returns to its original shape once the mass is removed.
What defines an inelastic material?
If it does not return to its original shape once the mass is removed.
What is the formula for force exerted on a spring?
F = k × x
Where F is force (N), k is spring constant (N/m), and x is extension (m).
What is the formula for energy transferred in stretching?
E = 0.5 × k × x²
Where E is energy (J), k is spring constant (N/m), and x is extension (m).
What type of relationship exists when the extension of an object is directly proportional to the force applied?
Linear relationship.
What type of relationship exists when the extension is not directly proportional to the force?
Non-linear relationship.
What is the first step in the core practical for measuring spring extension?
Secure a clamp stand to the bench using a G-clamp or a large mass on the base.
What should be attached to the top clamp in the core practical?
The spring.
What should be attached to the bottom clamp in the core practical?
A ruler.
What should be measured and recorded before hanging a mass?
The unloaded length of the spring.
What is the weight of the 100 g slotted mass carrier?
0.98 newtons (N).
What happens to the length of the spring when a larger force is applied?
A larger force causes a bigger extension.
What does the area under the linear section represent?
Work done.
What is the relationship between extension and force for a linear relationship?
The extension of an object is directly proportional to the force applied.
What characterizes a non-linear relationship in terms of extension and force?
The extension is not directly proportional to the force.
What is atmospheric pressure?
Atmospheric pressure is the pressure exerted by the weight of the air above a given point.
How does air density change with altitude?
The air becomes less dense at higher points as there are fewer air molecules.
What contributes to pressure in a fluid?
Pressure in a fluid is a combination of the pressure exerted by the fluid itself and the pressure exerted by the atmosphere.
What happens when an object is immersed in a liquid?
The liquid exerts pressure upon the object, in addition to the atmospheric pressure.
How is pressure exerted on objects in fluids?
The pressure is exerted evenly across the surface of the fluid.
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Topic 15 Phys33
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Topic 2 Motion and Forces Scalar Vector Speed and Acceleration14
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Topic 2 Motion and Forces Weight and Resultant Forces7
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Topic 2 Motion and Forces Circular Motion3
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Topic 2 Motion and Forces Momentum and Collisions10
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Topic 2 Motion and Forces Reaction Time15
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Topic 3 Conservation of Energy24
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Topic 3 Conservation of Energy Sources11
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Topic 4 Waves Basics8
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Topic 4 Waves Differences2
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Topic 4 Waves Equations5
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Topic 4 Waves Behaviour and Boundaries6
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Topic 4 Waves Sound, Ultrasound and Infrasound9
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Topic 5 Light and EM Reflection, Refraction & Lenses12
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Topic 5 Light and EM Basics9
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Topic 5 Light and EM Radiation, Temperature & Energy Balance7
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Topic 5 Light and EM Dangers and Uses12
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Topic 5 Light and EM Production4
