Chapter 3: Motion in Two and Three Dimensions

A2-21 MAGNETIC VECTOR BOARD

Movable magnetic vectors which stick to the lecture hall blackboards.

A2-23 VECTOR PRODUCT

Three-dimensional model of vector product with variable angle and magnitude of vector product.

A2-33 DIRECTION COSINES MODEL

Three-dimensional model - dispels geometry myths about projections of vectors.

C2-41 VECTOR ADDITION OF VELOCITIES

Ball struck with equal impulses in the x and the y directions moves off at 45 degrees.

Loop: VECTOR ADDITION - VELOCITY OF A BOAT

Show film loop on blackboard and draw vectors for boat velocity and river current, then show how they add in several circumstances.

C2-21 BALLS DROPPED AND SHOT

Shows independence of horizontal and vertical coordinates.

C2-22 MONKEY AND HUNTER

Monkey drops when bullet is shot directly at him, so the bullet always hits him.

C2-25 FUNNEL CART

Ball projected vertically from cart moving with a constant velocity drops back into the funnel.

C2-27 FUNNEL CART ON INCLINE

Do Funnel Cart demonstration on an inclined track; have students calculate whether or not ball will fall back into funnel.

Chapter 4: Newton's Laws I

C3-12 PENCIL AND PLYWOOD

A pencil is accelerated to high speed using a CO2 fire extinguisher and impaled on a piece of plywood.

C4-02 AIR TRACK - A=F/M

Illustrates 2nd law with various masses and forces.

C5-01 NEWTON'S THIRD LAW - STATIC DYNAMOMETERS

Simple demo of action/reaction for static case.

C4-43 TERMINAL VELOCITY - STACKED COFFEE FILTERS

Simple yet elegant demonstration of viscous forces and terminal velocity.

C4-51 WEIGHTLESSNESS IN FREE FALL - MASS IN BEAKER

A 100g mass is attached to the inside of an inverted plastic beaker by a rubber band, which pulls mass into beaker when system is dropped.

B2-03 EQUILIBRIUM OF FORCES - INCLINED PLANE

Body on smooth inclined plane in equilibrium with weight hanging over pulley.

D1-35 CENTRIPETAL FORCE - ROTATING MASS

Measure centripetal force vs. angular speed.

Chapter 5: Newton's Laws II

C6-02 INCLINED PLANE - FRICTION BLOCK

Measure coefficient of sliding friction and show that static friction is greater than sliding friction.

C6-11 SLIDING FRICTION - LECTURE TABLE AND FELT

Show quantitatively that static friction greater than sliding friction.

C6-12 SKIDDING AUTOMOBILE

Car slides backward when rear tires are locked.

C6-14 SOCIAL CLIMBER

Friction toy with nice force analysis.

C4-21 ATWOOD MACHINE

Determine acceleration of weights or value of g.

C4-22 HORIZONTAL ATWOOD MACHINE

Measure decrease in tension in string during acceleration.

D1-51 BANKED CURVE MODEL

Geometry for force analysis of car on banked curve.

Chapter 6: Work and Energy

A2-41 LINE INTEGRAL MODEL

Large model of line integral on 3d xyz coordinate axes.

B4-01 HOOKE'S LAW

B4-03 SPRINGS IN SERIES AND PARALLEL

Features of springs used in succeeding topics.

C8-04 HILL TRACK

Illustrates transformation between kinetic energy and gravitational potential energy.

C2-11 RACING BALLS

Let students predict results of ball race on straight and dipped tracks. Nice analysis.

D1-53 LOOP-THE-LOOP

Illustrates forces and energy conservation. (Also good in Chap 12)

C8-03 GALILEO'S PENDULUM

Pendulum bob rises to same height for any radius.

C8-01 GIANT PENDULUM

A must! Energy conservation prevents it from smashing your nose.

B3-12 PULLEY - MECHANICAL ADVANTAGE

Shows mechanical advantage and work in pulley system.

Chapter 7: Systems of Particles and Conservation of Momentum

Chapter 8: Rotation

D1-02 PELLET VELOCITY FROM ROTATING DISCS

Determine velocity of pellet from B3-34 by measuring transit time between two rotating paper disks.

B2-21 CONCEPT OF TORQUE - TORSIONAL CHAIR

Dependence of Torque=rxF on r, F, and angle.

D2-31 OBERBECK CROSS

Calculate moment of inertia and angular acceleration of system when known torque applied, verify with demo.

D2-32 AIR TABLE - LINEAR AND ANGULAR ACCEL OF A DISK

Standard problem of disk accelerated by string around its diameter.

D2-11 HINGED STICK AND FALLING BALL

End of hinged stick falls with a>g so ball falls into cup.

D2-12 TOPPLING CHIMNEY

Chimney breaks up with top half rotating more slowly.

SLIDE: TOPPLING CHIMNEY

Nice photo sequence; use with demo.

D2-01 RING AND DISK ON INCLINED PLANE

D2-02 MISCELLANEOUS BODIES ON INCLINED PLANE

Acceleration down incline depends on moment of inertia.

D1-82 ROLLING FRICTION

Direction of frictional reaction force for accelerated rolling object depends on moment of inertia.

D3-01 MASSES SLIDING ON ROTATING CROSSARM

D3-03 ROTATING CHAIR AND WEIGHTS

Large and small demos of angular momentum conservation.

D3-05 ROTATING CHAIR AND BICYCLE WHEEL

Change in orientation of rotating wheel causes rotation of chair with instructor.

D4-03 BICYCLE WHEEL GYROSCOPE ON PIVOT

Large gyroscope shows precession and nutation.

D4-02 BICYCLE WHEEL GYROSCOPE WITH COUNTERWEIGHT

Large, very slow precession and nutation.

D4-07 SUITCASE GYROSCOPE

Let students feel gyroscopic effects by moving suitcase.

D1-53 LOOP-THE-LOOP

Show rotational KE results in higher starting point than in case of sliding.

SLIDE: CAT RIGHTING ITSELF WHILE FALLING

Explain using conservation of angular momentum.

Videodisc: Skylab Physics

Shows lots of rotational effects with no gravity.

Chapter 9: Static Equilibrium of a Rigid Body

B2-23 TORQUE CONDITION FOR EQUILIBRIUM

Shows both translational and rotational conditions must be met for stable equilibrium.

B1-08 STATES OF EQUILIBRIUM - CONE

Illustrates stable, unstable, and neutral equilibrium.

B1-01 CENTER OF MASS - DISC SECTION

CM of disc with missing section found by hanging figure.

B1-02 CENTER OF MASS - LEANING TOWER

Add top section and leaning tower topples.

B1-06 DOUBLE CONE - LARGE

Double cone appears to be rolling uphill but CM is moving down.

B1-11 BALANCE MAN

Low CM gives figure great stability.

B2-41 ROBERVAL BALANCE

Paradoxical mechanism creates torque balance used in standard pan balance. Ask students to predict result.

B1-15 TOPPLING CYLINDERS

Tilted cylinder topples when lid added; vertical cylinder topples when lid removed. Have students calculate why.

B2-32 EQUILIBRIUM OF TORQUES - LARGE

Large demo of static torque balancing.

B2-42 ARM MODEL

Illustrates forces attained in arm.

B2-43 CRANE BOOM

Forces in crane boom in several orientations.

B2-35 EQUILIBRIUM OF TORQUES ON METERSTICK

Balance meterstick asymmetrically on two fingers, then move fingers together. Have students guess what happens to meterstick.

Chapter 10: Gravity

LOOPS: ORBITING BODIES IN VARIOUS FORCE FIELDS PART I

ORBITING BODIES IN VARIOUS FORCE FIELDS PART II

Illustrates orbit of planet if gravity were other than an inverse square force.

E2-51 GRAVITATIONAL COLLAPSE - MODEL

Place donut magnets on post with similar poles together, weight of magnets overcomes magnetic repulsion and pushes magnets together.

P1-02 LOCAL INERTIAL FRAME OF REFERENCE

Dramatic demo of free-falling reference frame illustrating Einstein's principle of equivalence.