3.3 Potential Energy

• Potential energy is stored energy that an object possesses due to its position
• There are two primary types of potential energy: gravitational and elastic
• What is gravitational potential energy dependent on?

  Height and mass
• Elastic potential energy is stored in deformable objects like springs
• The formula for gravitational potential energy is U = mgh.
• What does gravitational potential energy depend on besides height?

  Mass
• Elastic potential energy is stored in objects that are either stretched or compressed
• In the formula U = mgh, 'g' represents the acceleration due to gravity.
• What is the main difference between potential and kinetic energy?

  Motion
• Potential energy is the energy of motion.

  False
• What is the reference point for gravitational potential energy?

  Height
• The formula for elastic potential energy includes the spring constant 'k'.
• In the formula U = mgh, 'h' represents the height
• Elastic potential energy depends on the object's mass.

  False
• Gravitational potential energy is the energy an object has due to its height
• Gravitational potential energy increases as height increases.
• What is the approximate value of acceleration due to gravity on Earth?

  9.8 m/s²
• What is the gravitational potential energy of a 2 kg ball lifted 3 meters above the ground?

  58.8 J
• Elastic potential energy is stored in deformable objects like springs when they are stretched or compressed
• Elastic potential energy is released when the object returns to its equilibrium position.
• What is the elastic potential energy of a spring with a spring constant of 50 N/m compressed by 0.2 meters?

  1 J
• Elastic potential energy depends on height and mass.

  False
• Potential energy is the stored energy that an object possesses due to its position
• When is energy released from an object in elastic potential energy systems?

  Equilibrium position
• Elastic potential energy is stored in deformable objects when they are either stretched or compressed
• What is the spring constant 'k' a measure of in elastic potential energy calculations?

  Stiffness
• Elastic potential energy depends on height and mass like gravitational potential energy.

  False
• Unlike gravitational potential energy, elastic potential energy depends on the displacement and spring constant
• What is the formula for gravitational potential energy?

  U = mgh</latex>
• What is the value of 'g' (acceleration due to gravity) on Earth in m/s²?

  9.8
• A spring with a spring constant of 200 N/m compressed by 0.1 meters has an elastic potential energy of 1 joule.
• What does 'm' in the gravitational potential energy formula represent?

  Mass
• What is the formula for elastic potential energy?

  U = (1 / 2)kx²</latex>
• The value of 'g' on Earth is approximately 9.8 m/s².
• A 5 kg box on a 2 m shelf has a gravitational potential energy of 98 joules.