To demonstrate that the relationship between the extension on a spring is proportional to the load applied to it. This complete apparatus has a 150mm adjustable mirror scale to prevent parallax error and is marked in millimetres and mounted on a sturdy 300mm rod. Attached to the rod is a hook supporting a coiled spring with a mass hanger and indica..

For proving HookeÍs Law of Elasticity, i.e. that elongation of an object is directly proportional to the load applied and demonstrating the phenomenon of simple harmonic motion of a vibrating weight, potential energy etc. Consists of an adjustable mirrored scale 15cm long, graduated in millimeters, mounted on a support rod 30cm long fi tted on a ba..

It consists of an iron stand 900 mm length fixed on a 4 kg cast iron heavy base with two levelling screws each rod 12.5 mm thick .A steel frame mounted on a heavy cast iron base with leveling screws. Upper end of the rod (under test) 900 mm length and 5 mm dia is clamped by a 3 law chuck and the lower end is clamped into the axis of a torsional dru..

The wheel 165 mm dia. Over groove moving on ball bearings is provided with chuck to hold the test rod of 55 cm long and 5 mm dia with two aluminum scales grated 30-030 in single degrees, mounted on pillar support, which are adjustable along the rod,  two pointers with clamp for attaching to specimen, on each of brass and steel rods, cord and h..

RIGIDITY APPARATUS  (DYNAMICAL METHOD)It consists of an iron stand 900 mm length fixed on a 4 kg cast iron heavy base with two levelling screws each rod 12.5 mm thick .A steel frame mounted on a heavy cast iron base with leveling screws. Upper end of the rod (under test) 900 mm length and 5 mm dia is clamped by a 3 law chuck and the lower..

The instrument consists of two iron frames connected by a link. The frames are fitted with self centering chucks. An accurately graduated micrometer screw to read 0.01mm is fitted on a frame. One end of a sensitive spirit level is pivoted to one of the frame, the other end on the points of a micrometer screw is fitted in other frame. Complete with ..

Consists of a scale plate carrying a 0 to 30mm scale and a movable vernier readable to 0.1mm precision. Both have bars with clamping screws for the wires and hooks for the tension weight and loading masses. A ceiling clamp is provided for the upper ends of the wires, together with a pair of large wood screws for attaching it to a convenient overhea..