Friction Kit   (MC-1168)

It demonstrates the relationship between friction and reaction. Kit comprises wrap free wood board 760 x 150 x 18 mm with steel eye ring in one edge, 10 steel rollers 100 mm long x 13 mm diameter, 4 wood block 230 x 115 x 18 mm, one of which has a steel eye in one edge, and a stout metal crank handle in a U shaped bracket 90 x 50 mm, one crank assembly. Supplied without spring balance.

Inclined Plane   (MC-1169)

It comprises a board 600 x 75 mm hinged to base 460 x 90 mm. The board may be clamped in any position to a graduated arc shaped support. The upper end of the plane is provided with an aluminium pulley. Complete with roller 75 x 25mm diameter two slides and a pan without masses.

Inclined Plane and Friction Board   (MC-1170)

A plane Board 600 x 75 mm hinged to the base at one end and provided with a pulley at the other end. The inclination of the plane is varied by a movable block. The friction slider 100 x 65 mm is of the same wood and is reversible and has one side cut away for half of its area. Supplied complete with roller 75 x 25 mm but without masses.

Accessories

Scale Pan MC-1170/1

Aluminium, circular 75 mm diameter complete with suspension cords and hook.

Cords MC-1170/2

Cords approx. 0.75mm diameter.

Masses MC-1170/3

One 10 gm wire hanger plus 9 x 10 gm brass weights, total 100 gm.

Projectile Apparatus/Falling Bodies Apparatus   (MC-1171)

This apparatus demonstrates the independence of horizontal and vertical velocities. It comprises a polished wooden block 200 mm long, which is pivoted an L-section metal launching bar 180 mm long. The bar is spring loaded and provided with a trigger catch. A small hole near each end of the bar serves to locate a 18 mm diameter steel ball. As and when the catch is released one ball drops vertically while the other is projected horizontally. The fact that the vertical velocities of both balls are the same at any instant, despite the fact that one has a large horizontal component, is shown by the fact that both hit the floor at the same instant.

The apparatus is supplied complete with a pair of steel balls 18 mm diameter which is stored in a covered recess in the wooden body

Collision in Two Dimension   (MC-1172)

This is to demonstrate the principle of conservation of momentum and showing that momentum is a vector quantity having both magnitude and direction.

The apparatus comprises: A curved wooden runway 275 mm long and 65 mm high at its highest point, having a groove 8 mm wide down which a steel ball is rolled. An index mark at the top of the runway is provided so that the ball may be rolled from a constant height ensuring reprodudbility of results. A metal plate 100 mm square is attached to its lower end which enables the apparatus to be fixed to the edge of a bench by a G-clamp. The plate also has a slot for the attachment of object sphere support. An object sphere support is an adjustable device which attaches to the mounting plate of the runway and will support a ball either exactly opposite the end of the runway for head on collision or slightly offset for oblique impact. Supplied with a plumb bob for making the plumb line and Two spheres (steel ball bearings 16 mm diameters).

Dynamic Trolleys, Wooden   (MC-1173)

A pair of these trolleys are used for investigation on momentum velocity, acceleration etc. Both the trolleys are identical and each consists of a two rectangular wooden blocks 300 mm long moving on three low friction wheels. The trolley is fitted with spring loaded" impulse rod. Rod has three positions to provide different impulses which is triggered by a release pin, In the front of each trolley two holes are drilled and fitted with corks. With removable metal pins at each end to enable trolleys to be stacked or to provide anchoring points for accelerating cords.

(a) Trolleys with rubber wheels fitted with ball bearing
(b) Trolleys with plastic wheels fitted on bushes

Dynamic Trolleys, Metal   (MC-1174)

Trolley Accelerator   (MC-1175)

To provide constant accelerating force to dynamics trolley. A pair of metal discs with a tensioning spring mounted on a metal bracket with a handle provides different tensions to the string, providing adjustable but constant force to the trolley.

Trolleys Runway   (MC-1176)

Board 1,5 x 0.3 meter and thickness 18 mm of wrap resistant wood reinforced with metal angle side rails.

Stackable Mass Steel   (MC-1177)

Approximately equivalent to that of one dynamic trolley Cat-No. (P-1790) with rubber locating pads which helps produce a less cumbersome assembly as it substitutes one Trolley where large number of trolleys stacked together are used.

Elastic Cord With Eyelets   (MC-1178)

For accelerating dynamic trolleys. It consists of an 150 mm elastic cord with an eyelet at each end. One or more cords are used simultaneously depending on acceleration required. The cords are packed in tens.

Springs Open Wound   (MC-1179)

To investigate longitudinal wave motion, pack of tens open wound spiral springs 50 x 15 mm length x diameter which can be attached by means of spring holders in the front or rear of the trolley. Several dynamics trolleys may be jointed end to end for traveling wave demonstration. Supplied in pack of tens.

Spring Holders or Slide Frames   (MC-1180)

To attach spring side by side to the back and front of wooden trolleys. Pack of two.

Ticker Tape Timer   (MC-1181)

This timer is useful for students to develop basic understanding of constant speed, acceleration and deacceleration. It operates on 12V a.c. and is therefore quite safe for work by studei";s in the dynamics lab. This timer has an electromagnet with spring loaded, striker which strikes the paper tape drawn through guides. It is supplied along with a tape roll and carbon discs. Dots are spaced at 1/50 or 1/60 second intervals depending on a mains frequency. With stand for tape but without tape.

Ticker Tape Timer   (MC-1182/1)

Same as above, but without stand