To determination of modulus of rigidity of a wire by statically method using horizontal pattern of apparatus
The Modulus of Rigidity
M= load suspended.
D= Diameter of the pulley.
R = Radius of the experimental rod.
G =Acceleration due to gravity.
L1 – L2 = distance between two pointers.
θ1– θ2 = Difference of the angular twist produced in the rod.
- Horizontal pattern of apparatus.
- Set of ½ kg weights.
- Screw gauge.
Table for least count of the screw gauge:
Zero error of the screw gauge = …………. c.m.
Table for determination of the radius (r) of the rod:
Table for the Determination of the diameter (D) of the pully:
Difference in the length between the two pointers (L1 – L2)= ……… cm
Table for the determination of the Twist:
The modulus of rigidity ( η) of the rod is ….. dyne/cm2