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Videos By Chapter
from
Inquiries Into Physics

Chapter 2: Newton's Laws

Force and Torque
Newton's First Law
Mass and Center of Mass
Different Forces, Different Motions
Newton's Third Law
Space Shuttle
Universal Gravitation
Tides

Newton's Laws Videos

Force and Torque	Discussion	Streaming	Download	Demo Page
Mass on Spring, light	A spring will be stretched a distance proportional to the amount of mass that is added to the spring.	Real	Real MPG	Mechanics 1R10.10
Mass on Spring, medium	A spring will be stretched a distance proportional to the amount of mass that is added to the spring.	Real	Real MPG	Mechanics 1R10.10
Mass on Spring, heavy	A spring will be stretched a distance proportional to the amount of mass that is added to the spring.	Real	Real MPG	Mechanics 1R10.10
Fourteen-Hook Bar	Different combinations of mass and distance are required to balance the torques on the stick.	Real	Real MPG	Mechanics 1J40.20
Odd-Shaped Bar	Different combinations of mass and distance are required to balance the torques on the odd shaped bar.	Real	Real MPG	Mechanics 1J10.27
Torque Wrench	Extending the length of a wrench's handle allows for more torque, allowing a person to loosen a stubborn bolt.	Real	Real MPG	Mechanics 1J40.15
Newton's First Law	Discussion	Streaming	Download	Demo Page
Tablecloth Pull	The objects on the table tend to stay at rest due to their inertia.	Real	Real MPG	Mechanics 1F20.30
Toilet Paper	If you pull the toilet paper slowly, you will over come the inertia of the roll and pull off lots of paper. However, if you pull quickly, you cannot overcome the inertia and the paper rips off.	Real	Real MPG	Mechanics 1F20.19
Inertia Rods	These rods weigh the same, but due to the distribution of the mass, one is harder to rotate than the other.	Real	Real MPG	Mechanics 1Q10.10
Mass and Center of Mass	Discussion	Streaming	Download	Demo Page
Magic Bird	Only the center of mass of an object needs to be supported in order to support the object. The bird's center of mass in at it's beak.	Real	Real MPG	Mechanics 1J20.36
Horse and Rider	Only the center of mass of an object needs to be supported in order to support the object. The horse and rider's center of mass is under the hind legs.	Real	Real MPG	Mechanics 1J20.35
Double Cone and Plane Trick	Look carefully; the center of mass of the cone is actually rolling down hill. An optical illusion makes it look like its rolling up.	Real	Real MPG	Mechanics 1J11.50
Feeble-minded Disk	The center of mass of the disk is not in the center as you might expect. Thus, placing the center of mass off center can create the torque need to roll the disk uphill.	Real	Real MPG	Mechanics 1K10.50
Different Forces, Different Motions	Discussion	Streaming	Download	Demo Page
Simultaneous Fall	One ball, having only a gravitational force, will fall straight down. The other ball, having gravity and a horizontal force, will follow a parabola. Watch it in slow motion.	Real	Real MPG	Mechanics 1D50.40
Rotating Bucket	The bucket (and water contained therein) experiences centripetal acceleration when swung in a circle.	Real	Real MPG	Mechanics 1D50.40
Newton's Third Law	Discussion	Streaming	Download	Demo Page
Exploding Carts, equal mass	Because these carts are of equal mass, they will have the same velocities and momentums after release.	Real	Real MPG	Mechanics 1D50.40
Exploding Carts, unequal mass	Because these carts are NOT of equal mass, they will NOT have the same velocities after release. Instead, their velocities are inversely proportional to their mass; i.e. the bigger mass will have the smaller velocity. Their momentums will still be equal.	Real	Real MPG	Mechanics 1D50.40

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