PE to KE Pendulum

What is the weight of the object used in the demonstration?

• 10 kilograms

• 20 kilograms

• 25 kilograms

• 15 kilograms

How much work is done to lift the object 1 meter up?

• 250 joules

• 100 joules

• 150 joules

• 200 joules

What happens to the potential energy of the object when it is lifted?

• It is converted to kinetic energy

• It remains the same

• It increases

• It decreases

Tags

NGSS.MS-PS3-2

What is the purpose of using a wrecking ball?

• To lift objects

• To demolish buildings

• To measure weight

• To generate electricity

What principle does the teacher trust to avoid injury from the pendulum?

• Conservation of electrical energy

• Conservation of thermal energy

• Conservation of mechanical energy

• Conservation of chemical energy

Tags

NGSS.MS-PS3-4

What must the teacher do to ensure the pendulum does not harm him?

• Give the object an initial speed

• Release the object with zero speed

• Catch the object before it swings back

• Wear protective gear

At what height does the potential energy of the object become maximum?

• At the highest point of the swing

• At the lowest point of the swing

• At the midpoint of the swing

• When the object is released

Tags

NGSS.MS-PS3-2

What type of energy conversion occurs when a wrecking ball is swinging towards a building?

• Potential to kinetic

• Kinetic to potential

• Chemical to mechanical

• Electrical to mechanical

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5