1.4.2 Potential Energy

• What are the two main types of potential energy?

  Gravitational and elastic
• What happens to gravitational potential energy as an object is lifted higher?

  It increases
• What is the approximate value of gravity on Earth in m/s^2?

  9.8
• Match the variable in the GPE formula with its unit:

  Mass ↔️ kg

  Gravity ↔️ m/s^2

  Height ↔️ m
• In the GPE formula, m represents the mass of the object measured in kilograms
• What is the Gravitational Potential Energy of a 5 kg object lifted 3 meters above the ground, assuming g = 9.8 m/s^2?

  147 Joules
• Displacement x in the EPE formula is measured in meters.


  True
• Both GPE and EPE are measured in the same unit, which is Joules.


  True
• When is elastic potential energy stored in an object?

  When it is deformed
• What unit is mass measured in?

  Kilograms (kg)
• Gravitational Potential Energy is calculated using the formula GPE = mgh


  True
• The value of 'g' in the GPE formula is approximately 9.8 m/s^2 on Earth


  True
• What is the GPE of a 5 kg object lifted 3 meters above the ground?

  147 Joules
• What is the unit of the spring constant 'k'?

  N/m
• GPE depends on mass, gravity, and height.


  True
• In the GPE formula, 'g' is the acceleration due to gravity and is approximately 9.8 m/s^2

  True
• The displacement 'x' in the EPE formula is measured in meters.


  True
• What is the formula for gravitational potential energy (GPE)?

  $GPE =$$m \times g \times h$
• What does 'h' represent in the GPE formula?

  Height above reference point
• What is the GPE of a 5 kg object lifted 3 meters above the ground?

  147 Joules
• What happens to GPE as an object falls?

  It converts to KE
• Gravitational potential energy is calculated using the formula mgh
• Match the type of potential energy with its description:

  Gravitational Potential Energy ↔️ Energy stored due to height

  Elastic Potential Energy ↔️ Energy stored in deformed objects
• Potential energy is only stored in objects at rest.


  True
• The elastic potential energy formula is \frac{1}{2} k x^{2}
• What does g represent in the GPE formula?


  Acceleration due to gravity
• The formula for Elastic Potential Energy (EPE) is EPE = \frac{1}{2} \times k \times x^{2}</latex>
• The elastic potential energy stored in a spring is proportional to the square of the displacement
• What is potential energy stored due to?

  Position or configuration
• Steps for comparing GPE and EPE

  1️⃣ Identify the type of potential energy

  2️⃣ Determine the relevant variables

  3️⃣ Apply the correct formula

  4️⃣ Calculate the energy value
• The approximate value of acceleration due to gravity on Earth is 9.8
• The Gravitational Potential Energy (GPE) of an object is calculated using the formula mgh
• The variable 'h' in the GPE formula represents the height
• The Elastic Potential Energy (EPE) of a spring is calculated using the formula 1/2kx^2
• The Gravitational Potential Energy (GPE) formula is mgh
• Elastic Potential Energy (EPE) depends on the spring constant and the displacement
• In the GPE formula, 'm' represents the mass
• The GPE of a 5 kg object lifted 3 meters above the ground is 147 Joules
• In the formula for GPE, 'm' represents the mass
• The formula for elastic potential energy (EPE) is $EPE =$$\frac{1}{2} \times k \times x^{2}$, where 'k' is the spring constant