Coil friction Apparatus:- it consists of a aluminium matelled drum and three frictionless polleys, which is mounted on a wooden board of size 60 x 75 CMS the said pulleys can be fixed to give a lap of 1/4 or the 3/4 full circumference of the drum, complete with a cord and two pans, w/o wts.
a) Law of Moments Apparatus :- Comprising a wooden balanced disc with symmetrically placed holes in concentric circles of known diameter capable of rotation about its centre. Stand with scale, plumb bob and two scale pans without weights. b) Law of Moments Apparatus :- Same as above but with aluminium balanced disc.
Universal force table :- two verify the laws of triangle parallelogram and polygon of forces, comprises of a circular 40 cm dia aluminum disc. Graduated in 360 degrees. Complete with leveling screws clamping device to fix the table at any desired angle five sliding clamp, pulleys, central ring, string & five sets of iron nickel slotted wts. Each set containing nine weights and one hanger of 50 gm cap.
Polygon of Forces Appts :- It consists of a wooden board of size 75 x 70 cms, Provided with Two wall brackets and four adjustable frictionless aluminium Z Pulleys complete with four one Kg. wets and one scale pan.
a) Screw Jack :- All metallic constructions and a accurately machine cut screw with a pitch of 5 mm crrying a double flanged turn table of about 20 cm dia fitted on a heavy cast iron base and complete with two adjustable pulleys cord & hooks without wts.
b) Screw Jack :- Small size, experimental demonstration type model with an aluminium turned pulley of about 10 cm dia is fitted on a screw jack which is fitted on a 12cm dia metallic circular base with an adjustable pulley and a linear vertical scale, over all height is about 15 cms with out wts.