Podcast
Questions and Answers
Under what condition is the principle of moments applicable?
Under what condition is the principle of moments applicable?
- When the object is in equilibrium. (correct)
- When external forces are acting on the object.
- When the object is in motion.
- When the object is accelerating.
According to the Law of Conservation of Energy, energy can be created but not destroyed.
According to the Law of Conservation of Energy, energy can be created but not destroyed.
False (B)
According to Newton's third law, how are action and reaction forces related?
According to Newton's third law, how are action and reaction forces related?
equal and opposite
According to Hooke's Law, load and extension are directly proportional, unless the ______ limit is exceeded.
According to Hooke's Law, load and extension are directly proportional, unless the ______ limit is exceeded.
Match the following laws with their descriptions:
Match the following laws with their descriptions:
What does Newton's first law of motion describe?
What does Newton's first law of motion describe?
According to the Principal of Momentum, the total momentum before a collision is always less than the total momentum after a collision if no external forces are acting.
According to the Principal of Momentum, the total momentum before a collision is always less than the total momentum after a collision if no external forces are acting.
According to Newton's second law, what is the relationship between force and acceleration?
According to Newton's second law, what is the relationship between force and acceleration?
According to the laws of reflection, the incidence ray, the reflected ray and the normal all lie in the same ______.
According to the laws of reflection, the incidence ray, the reflected ray and the normal all lie in the same ______.
What must remain constant for Ohm's law to apply?
What must remain constant for Ohm's law to apply?
State Faraday's law
State Faraday's law
State Lenz's law
State Lenz's law
Flashcards
Principle of Moments
Principle of Moments
When in equilibrium, total clockwise moments equal total anticlockwise moments.
Hooke's Law
Hooke's Law
Load and extension are directly proportional, within the elastic limit.
Law of Conservation of Energy
Law of Conservation of Energy
Energy is neither created nor destroyed, only transformed.
Laws of Reflection
Laws of Reflection
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Newton's First Law
Newton's First Law
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Newton's Second Law
Newton's Second Law
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Newton's Third Law
Newton's Third Law
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Principal of Momentum
Principal of Momentum
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Ohm's Law
Ohm's Law
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Faraday's Law
Faraday's Law
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Study Notes
- In equilibrium, the total clockwise moments equal the total anticlockwise moments.
- Hooke's Law states that load and extension are directly proportional, provided the elastic limit is not exceeded.
- The Law of Conservation of Energy states energy cannot be created or destroyed, only transformed.
Laws of Reflection
- The angle of incidence equals the angle of reflection.
- The incident ray, reflected ray, and the normal all lie in the same plane.
Newton's Laws of Motion
- First law: An object in motion stays in motion, and an object at rest stays at rest, unless acted upon by an external force.
- Second law: Force is directly proportional to acceleration and inversely proportional to mass, given mass is constant.
- Third law: For every action, there is an equal and opposite reaction acting on different bodies.
- The total momentum before a collision equals the total momentum after a collision, assuming no external forces act upon it.
- Current is directly proportional to voltage, provided temperature remains constant (Ohm's Law).
- The induced current is directly proportional to the rate at which magnetic field lines are cut, as noted in Faraday's Law.
- Lenz's Law: Induced current flows in a way that opposes the change producing it.
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