Eisco

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US$32.13
Loop kit is used to demonstrate kinetic and potential energy, and calculates the normal force on a roller coaster rider. The kit includes two balls and a ramp with a loop for hands-on experiments, and has steel construction for durability. 
Delivery within 2-3 weeks
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US$72.45
Projectile launcher is used to study kinematic equations, and conversion between gravitational potential and kinetic energy. Students participate in an interactive experiment for measuring the muzzle velocity of the launcher to identify varying launch angles in order to quantify the initial kinetic energy of the projectile (ball). Using their velocity calculations, students then make predictions about where the ball will land.
Delivery within 2-3 weeks
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US$36.33
Pendulum is used to investigate the oscillation period, and has a frictionless mount and an adjustable string for measuring varying changes. The kit includes a pendulum back board, mounting rod, string, and pendulum bob and stopper for hands-on experiments, and has steel construction for durability.
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US$4.19
Visual Scientifics small replacement ball is used in laboratory experiments, and is versatile for use with the PT2SCO collisions in 2D, PTLOP loop kit, and PTPROJ launcher. The ball can be used as a projectile, or in free fall or ramp experiments.
Delivery within 2-3 weeks
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US$11.29
Fine packed iron fillings for magnetic filled mappings in plastic jar - useful for experiments with magnetism.
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US$6.36
This acrylic body spring scale with large has easily read flat scales and is zero adjustable.
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US$6.82
This acrylic body spring scale with large has easily read flat scales and is zero adjustable.
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US$9.04
This acrylic body spring scale with large has easily read flat scales and is zero adjustable.
Delivery within 2-3 weeks
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US$11.81
These high resolution, aluminum spring balances are classroom quality and high resolution.
Delivery within 2-3 weeks
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US$11.81
These high resolution, aluminum spring balances are classroom quality and high resolution.
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US$44.54
The set consists of six 20mm cubes of the following metals: brass, lead, zinc, copper, aluminum, and iron. Perfect for investigating density.
Delivery within 2-3 weeks
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US$8.40
Single, open sided frame, with hooks at each end carrying three ball bearing plastic pulleys with diameters of 25, 38 and 50 mm respectively. The open side frame greatly facilitates stringing up as no 'threading' is involved.
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US$22.68
Bench clamp pulley 50 mm diameter pulley with metal ball bearing carried on a two part aluminium frame, designed primarily for clamping to the edge of a bench, table etc. With the pulley overhanging the edge and in a vertical plane. Overall length of frame (pulley bar) 110 mm. Maximum clamp opening 25 mm.
Delivery within 2-3 weeks
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US$26.25
Comprising a 50 mm diameter nylon ball bearing pulley, carried on a two part aluminium frame, designed primarily for clamping to the edge of a bench, table etc. With the pulley overhanging the edge and in a vertical plane. Overall length of frame (pulley bar) 110 mm. Maximum clamp opening 25 mm.
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US$22.40
Clamp has a 45mm plastic pulley with bracket for bench mounting up to 25mm thickness. Can be used with a force table as well. 
Delivery within 2-3 weeks
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US$41.36
This complete apparatus has a 15cm adjustable scale. The adjustable scale helps to prevent parallax error. Scale is marked in millimeters and mounted on sturdy 30cm support rod and a wooden base. A hook supporting a coiled spring with a mass hanger and indicator is attached to rod. 
Delivery within 2-3 weeks
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