Podcast
Questions and Answers
What is the definition of work done on an object?
What is the definition of work done on an object?
- The force applied to the object divided by the time taken for the displacement
- The product of the mass of the object and the acceleration applied to it
- The product of the magnitude of the force acting on the body and the displacement in the direction of the force (correct)
- The product of the magnitude of the force acting on the body and the distance traveled by the body
What is the SI unit of energy or work?
What is the SI unit of energy or work?
- Newton
- Joule (Nm) or Kgm2s−2 (correct)
- Pascal
- Watt
What does the force component $F \cos \theta$ represent?
What does the force component $F \cos \theta$ represent?
- The total work done on the body
- The total force applied to the body
- The force perpendicular to the direction of displacement
- The component of force along the direction in which the body is displaced (correct)
Which quantity is defined as the ability to do work?
Which quantity is defined as the ability to do work?
What is the sum of kinetic energy and potential energy known as?
What is the sum of kinetic energy and potential energy known as?
What is the formula for work done on an object?
What is the formula for work done on an object?
What is the SI unit of force?
What is the SI unit of force?
What is the angle between the force vector and displacement vector in the formula for work done?
What is the angle between the force vector and displacement vector in the formula for work done?
What is the SI unit of energy or work?
What is the SI unit of energy or work?
What is the sum of kinetic energy and potential energy?
What is the sum of kinetic energy and potential energy?
Flashcards
Work done on an object
Work done on an object
The product of the force magnitude and displacement in the force direction.
SI unit of work
SI unit of work
Joule, equivalent to Nm or Kgm²s⁻².
Force component $F \cos \theta$
Force component $F \cos \theta$
The force component in the direction of displacement.
Ability to do work
Ability to do work
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Mechanical energy
Mechanical energy
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Formula for work done
Formula for work done
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SI unit of force
SI unit of force
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Angle in work formula
Angle in work formula
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Kinetic energy
Kinetic energy
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Potential energy
Potential energy
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Study Notes
Work and Energy
- Work done on an object is defined as the product of the force applied to the object and the displacement of the object in the direction of the force.
- The SI unit of energy or work is the Joule (J).
Force and Displacement
- The force component $F \cos \theta$ represents the component of the force acting in the direction of the displacement.
- The angle between the force vector and displacement vector in the formula for work done is θ (theta).
Energy
- Energy is defined as the ability to do work.
- The SI unit of energy or work is the Joule (J).
- The sum of kinetic energy and potential energy is known as mechanical energy.
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Description
Test your understanding of work and energy concepts with this Class 9 quiz. Assess your knowledge of the definition of work, calculation of work done, and the relationship between force and displacement.
