Two blocks A and B weighs 150 N and 200 N respectively is supported by a flexible cord which passes through a frictionless pulley which is supported by a rod attached to a ceiling. Neglecting the mass and friction of the pulley, compute the acceleration on the blocks and the tension on the rod supporting the frictionless pulley.

The 7 m long beam, supported by a cable and resting on a smooth inclined surface at point A, is subjected to 
a 150 KN point load. Determine the position ‘x’ of the point load to maintain equilibrium. Neglect the weight of 
the beam. 

Suppose a motorbike is moving in the eastward direction with some velocity, can this motorbike have an acceleration in the westward direction?

1. Only source of BOD in a river is untreated wastes that are being discharge from a food processing plant. The characteristics of untreated waste is not reported for the environmental protection agency of the town . To identify the waste water property from the processing plant the authority measured the DO of the river at 10km and 40km away from the plant and found 5mg/l and 2.5mg/l respectively. The average flow rate of the river is 0.25m/s and average depth is 4.5m with bed activity coefficient of 0.2.assume saturation DO 10mg/l