In mechanical systems, energy is transferred and transformed through various types of forces and work. Match each mechanical operation with its primary energy transformation or work process.
- Compressing a heavy vehicle suspension spring during a road impactConversion of mechanical work into elastic potential energy
- Applying friction brake pads against a spinning rotor to stop a machineConversion of kinetic energy into thermal energy via frictional work
- Using an electric hoist to lift a heavy engine block vertically at constant speedConversion of mechanical work into gravitational potential energy
- Spinning up a massive steel flywheel from rest in an energy storage unitConversion of mechanical work into rotational kinetic energy
Cevap
Compressing a suspension spring matches with conversion of mechanical work into elastic potential energy; applying friction brake pads matches with conversion of kinetic energy into thermal energy via frictional work; lifting an engine block vertically matches with conversion of mechanical work into gravitational potential energy; spinning up a flywheel from rest matches with conversion of mechanical work into rotational kinetic energy.
Each mechanical operation corresponds directly to a fundamental energy transition: deforming a spring stores elastic potential energy, friction converts moving kinetic energy into dissipated thermal energy, elevating a mass increases gravitational potential energy, and accelerating a rotating mass stores kinetic energy.
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Anahtar Kavram
Work-Energy Theorem and Forms of Energy Transformation
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