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educational materials - SPECTRUM Nasco Shopping Mall Divisions

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Physical Science<br />

Pulleys<br />

Simple Pendulum<br />

The accurate determination of time has been an extremely<br />

important part of physics. All events happen within a<br />

timed component. The simple pendulum is one method to<br />

determine this variable. This kit studies the pendulum and<br />

evaluates which of its factors are used in determining time.<br />

Meets national standards. For 36 students. Grades 9-12. (•1)<br />

Sh. wt. 4 lbs.<br />

SB48466M — $120.80<br />

Atwood Machine<br />

This simple, economical mechanism enhances the understanding<br />

of the effects of linear and angular acceleration.<br />

Machine consists of two low-friction pulleys attached<br />

to a support rod that can be mounted to a ring stand or<br />

other support. Can be used with most pulley cords, mass<br />

hangers, and masses. Elementary school through college.<br />

Sh. wt. 0.09 kgs.<br />

SB34813M — $65.40<br />

Tabletop<br />

Pulley<br />

Great for experiments<br />

calling for a<br />

pulley at different<br />

heights. Adjusts over<br />

a height range of 10<br />

cm, locks in place<br />

with a thumbscrew,<br />

and rotates a full<br />

360°. Two-piece<br />

apparatus consists<br />

of glass-filled, nylonmolded<br />

clamp and<br />

pulley with blue<br />

sheave attached to a<br />

stainless steel rod. Clamp fits tables up to 5 cm thick. Rod<br />

is 5 7 ⁄8" L x 3 ⁄8" dia. Coefficient of friction a very low .04.<br />

Tip: Use this pulley in acceleration labs. Clamp to table,<br />

tie weights to cord, slip cord over pulley, and accelerate<br />

objects with falling weights. Sh. wt. 0.20 kgs.<br />

SB37209M — $27.95<br />

BEST<br />

SELLER<br />

Assorted Pulleys<br />

Set of 100 pulleys consists of 25 each of 40 mm,<br />

30 mm, and 20 mm dia. pulleys (with 3.2 mm bores);<br />

and 10 mm pulleys (with a push fit to 2 mm motor<br />

shaft). Sh. wt. 0.20 kgs.<br />

SB28836M — $28.15<br />

3.<br />

1. Pulleys<br />

Excellent quality, free-running pulleys. The sheaves are 50<br />

mm in diameter and are made of rigid plastic. The block<br />

is constructed of metal with swivel hooks at the top and<br />

bottom. Colour may vary.<br />

Single-Sheave Pulley. Sh. wt. 0.06 kgs.<br />

SB12099M — $2.90<br />

Double-Sheave Pulley. Sh. wt. 0.11 kgs.<br />

SB12100M — $3.85<br />

Triple-Sheave Pulley. Sh. wt. 0.11 kgs.<br />

SB10810M — $3.00<br />

Quadruple-Sheave Pulley. Sh. wt. 0.09 kgs.<br />

SB10811M — $3.75<br />

2. Pulley Cord<br />

Tightly braided nylon cord especially designed for pulley<br />

and pendulum systems.<br />

30-ft. Roll. Sh. wt. 0.09 kgs.<br />

SB15378M — $6.20<br />

150-ft. Roll. Sh. wt. 3.23 kgs.<br />

SB39381M — $27.05<br />

3. Double-Tandem Pulley<br />

Free-running pulley with rugged plastic, deep V-grooves.<br />

The sheaves are 1 1 /2" and 2" in diameter, mounted in a<br />

heavy nickel-plated frame with a hook at each end.<br />

Sh. wt. 0.09 kgs.<br />

SB10812M — $2.10<br />

Triple-Tandem Pulley. Similar to SB10812M in construction,<br />

but sheave sizes are 1", 1 1 /2", and 2". Sh. wt. 0.11 kgs.<br />

SB10813M — $2.80<br />

4. Pulley Set<br />

Set of 2. Double and single, 2" dia. Excellent quality, free<br />

running. Made of rigid plastic with metal block and swivel<br />

hook top and bottom. Includes 30-ft. roll of nylon pulley<br />

cord. Sh. wt. 0.23 kgs.<br />

SB16150M — $8.90<br />

2.<br />

4.<br />

Pulley Demonstration<br />

Now you can perform several pulley demonstrations for your<br />

students. It can also be used as a very attractive classroom<br />

display. Unit consists of an 8" x 31 3 /4" hardwood base with a<br />

mounting capstan and screweye. Rods joined by metal crossbar<br />

with hook collars on which pulleys are hung. The pulley<br />

demonstration comes with instructions, suggested experiments,<br />

and demonstrations. Set includes three single pulleys,<br />

one quadruple pulley, one triple tandem pulley, one wheel<br />

and axle, three pulley clamps, three mass hangers, 500 ft. of<br />

pulley cord, and 10 slotted masses (10 to 500 g).<br />

Sh. wt. 10.60 kgs.<br />

SB16554M — $258.55<br />

190<br />

Pulleys Discovery Kit ®<br />

Contains four pulleys and an instructional guide with<br />

suggestions for classroom activities. Sh. wt. 0.11 kgs.<br />

SB26468M — $21.20<br />

Pulley Bench<br />

and Rod<br />

Mounting<br />

Consists of a 70<br />

mm/ 2 3 ⁄4" dia. metal<br />

pulley, mounted on a<br />

metal frame which can<br />

be clamped on a table<br />

up to 42 mm/ 1 5 ⁄8" thick.<br />

The frame also has a hole for<br />

a rod up to 12 mm diameter to<br />

pass through. Pulley can also be<br />

mounted on a rod. Sh. wt. 2 lbs.<br />

SB43487M — $21.25<br />

Tel: 1.800.668.0600 Fax: 1.800.668.0602

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