In the figure shows two blocks of equal weights designated as W1 and W2 connected together by a rod and resting on an inclined plane whose angle α can be varied. The coefficients of friction between the blocks and the surface of the plane are μ1 = 0.2 and μ2 = 0.3. The value of angle α at which the slipping will commence is given by
Consider the following statements : 1. Obtaining reliable properties of soil is very important in geotechnical engineering. Chunk samples obtained from the field are the best for this purpose. 2. Chunk samples may easily be obtained at all depths below ground level and for all types of soils. 3. Undisturbed soil samples are enclosed in rugged containers. As such, they do not get disturbed easily during transportation and handling. Which of the statements given above is/are correct ?