Podcast
Questions and Answers
Which of the following is true about a lever?
Which of the following is true about a lever?
- It cannot rotate
- It is always rigid
- It does not involve a fulcrum
- It is free to rotate about a fixed axis (correct)
What is the unit of moment?
What is the unit of moment?
- N/m
- Nm (correct)
- kg⋅m/s²
- kg/m
If two parallel forces with the same magnitude act in opposite directions, what are they called?
If two parallel forces with the same magnitude act in opposite directions, what are they called?
- Opposite forces
- Couple (correct)
- Converging forces
- Diverging forces
What is the torque of a couple equal to?
What is the torque of a couple equal to?
What is the SI unit of pressure?
What is the SI unit of pressure?
Which law states that any two point masses in the universe attract each other with a force proportional to the product of their masses and inversely proportional to the square of the distance between them?
Which law states that any two point masses in the universe attract each other with a force proportional to the product of their masses and inversely proportional to the square of the distance between them?
What instrument is used to measure the density of a liquid based on how deeply it sinks into the liquid?
What instrument is used to measure the density of a liquid based on how deeply it sinks into the liquid?
In free fall, an object experiences acceleration due to gravity causing it to accelerate. What is this called, eventually it reaches a speed such that it accelrates no more, what do we call this?
In free fall, an object experiences acceleration due to gravity causing it to accelerate. What is this called, eventually it reaches a speed such that it accelrates no more, what do we call this?
What principle states that when a body is immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced?
What principle states that when a body is immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced?
What happens when a diver experiences 'The Bends'?
What happens when a diver experiences 'The Bends'?
What is a fulcrum?
What is a fulcrum?
What is density defined as?
What is density defined as?
What factor affects how deeply a hydrometer sinks in a liquid?
What factor affects how deeply a hydrometer sinks in a liquid?
What is the relationship between pressure and depth in a fluid?
What is the relationship between pressure and depth in a fluid?
