The "Mechanics" laboratory devices

1. Purpose

1.1. The package is intended for school studying mechanics phenomena. Quantitative regularities are ascertained, and students learn to measure values.

1.2. The package is intended for frontal experiments, school and college students' research.

2. The package contains:

Carriage rail, 1 item
Carriage, 1 item
Stop-watch with two sensors, 1 item
Tripod stand, 1 item
Tripod foundation, 1 item
Coupler with two screws, 1 item
Gutter bracket, 1 item
U-groove, 1 item
Axled and balanced lever (with 2 equalizers), 1 item
Immovable block, 1 item
Movable block, 1 item
Plastic rug, 1 item
Load, 4 items
Steel ball, 1 item
Load's hanging hook, 2 items
Carbon paper, 1 sheet
Framed thread, 1 item
Manual, 1 item

3. General instructions

The set includes carriage, stop-watch and carriage rails. These tools provide with measuring transference distance and time.

Magnet holder and scale are fixed along a carriage rail. Magnet holder is intended to fix sensors. The rail may be installed vertically via fixation plate which is fixed at carriage's rail. It should be fixed at U-groove's handle on the angle.

The stop-watch's sensor is hermetically sealed and disconnected element. The sensor is ferreed. It is put inside a plastic box. The circuit is locked due to action of a magnet fixed at a carriage. When the sensors are plugged, the stop-watch powers on.

Rotate the tripod into screwed hole. Thus, the tripod is being installed. The tripod is steady because of two magnets pressed into foundation. The magnets are intended for tripod's fixation at metal operating layout.

Lever and immovable block are fixed at tripod utilizing a cross-piece screwed hole. The lever is equalized by two loads. The gutter's holder is installed into big cross-piece hole, then it is fixed by hold-down screw.

4. Basic features

Range of transference distance measured, (0-430)± 1 mm

Range of time measured, (0-99) s

Time measurement precision, 0.01 s

Watch-stop power source, 6F22 KRONA battery

Tripod length, 430 mm

Load's weight, (100±1) mm

Thread length, 150 mm

5. List of demonstration experiments

Measuring the sliding frictional force

Calibrating the spring and measuring forces by dynamometer

Studying the immovable block's construction and principle of operation

Studying the movable lever's construction and principle of operation

Clarifying the condition of lever's balance

Studying the "golden rule" of mechanics

Measuring the velocity of irregular motion

Determining the efficiency of physical body rising along the incline

Measuring the acceleration

Measuring the spring constant

Measuring the constant of sliding friction

Studying the law of conservation of energy

Studying the motion of physical body thrown horizontally

Checking the ratios of irregular motion transference distances

Measuring gravitational acceleration by pendulum

Studying balance of several physical bodies under multi-force influence

Studying the irregular motion velocity dependence on time

Determining of physical body's acceleration dependence on its force and mass

Determining pendulum's oscillation period dependence on weighing height

Determining irregular motion's transference distance dependence on time

6. Troubleshooting

The stop-watch indicator does not light when the sensors are plugged

Replace the power source (KRONA type battery)

The stop-watch neither starts nor stops

Check whether the sensors are installed correctly

7. The set of equipment necessary for package utilization

Teacher's manual (must be ordered separately)
Scale with millimeter degrees
Metal operating layout (must be ordered separately or taken from room's set)
4 Newton dynamometer