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MAE 1351 Exam 1 Latest Update | 2024/2025 | Graded A+
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MAE 1351 Exam 1 Latest Update | 2024/2025 | Graded A+ What does the term "mechanical advantage" mean? Mechanical advantage refers to the ratio of the output force produced by a machine to the input force applied, indicating how effectively a machine amplifies force. Define stress in mate...

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  • October 29, 2024
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  • 2024/2025
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MAE 1351 Exam 1 Latest Update |
2024/2025 | Graded A+
What does the term "mechanical advantage" mean?


✔✔Mechanical advantage refers to the ratio of the output force produced by a machine to the

input force applied, indicating how effectively a machine amplifies force.




Define stress in materials science.


✔✔Stress is defined as the internal resistance offered by a material to deformation, calculated as

force per unit area, typically expressed in pascals (Pa).




What is strain?


✔✔Strain is the measure of deformation representing the displacement between particles in a

material, expressed as a ratio of change in length to original length.




Explain what a moment of inertia is.


✔✔Moment of inertia is a property of a body that determines its resistance to angular

acceleration about a given axis, depending on the mass distribution relative to that axis.




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,What is the difference between elastic and plastic deformation?


✔✔Elastic deformation is the reversible change in shape when the applied stress is removed,

while plastic deformation is a permanent change in shape that occurs when the stress exceeds the

material's yield strength.




Define the term "dynamics."


✔✔Dynamics is the branch of mechanics that studies the forces and torques that cause motion

and the changes in motion of objects.




What is a rigid body in mechanics?


✔✔A rigid body is an idealization of a solid body in which deformation is neglected; the

distance between any two points on the body remains constant, regardless of external forces.




Describe what a mechanical wave is.


✔✔A mechanical wave is a disturbance that propagates through a medium (solid, liquid, or gas),

transferring energy from one location to another without a permanent displacement of the

medium itself.




What is a mechanical system?


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, ✔✔A mechanical system is a collection of interconnected components designed to work together

to perform a specific task or function, often involving the movement or transfer of energy.




Define force in the context of mechanics.


✔✔Force is an interaction that causes an object to undergo a change in motion, defined as a push

or pull acting upon an object, measured in newtons (N).




What is equilibrium in mechanical systems?


✔✔Equilibrium refers to a state where all the forces and moments acting on a body are balanced,

resulting in no net force and no acceleration.




Explain the concept of torque.


✔✔Torque is a measure of the rotational force applied to an object, calculated as the product of

the force and the distance from the pivot point to the line of action of the force.




What is kinetic energy?


✔✔Kinetic energy is the energy possessed by an object due to its motion, calculated using the

formula KE = (1/2) mv², where m is mass and v is velocity.




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