4. using the creep curves for polypropylene, estimate a) the e after 7x105 seconds. b) the length and diameter after 7x105 s of sample with an initial length of 112 mm and an initial diameter of 10.1 mm subjected to a constant force of 295 n. poisson’s ratio for this polymer is 0.36.

What precautions should you take to prevent injuries when dealing with heavy loads?

What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.

The flow rate of air through a through a pipe is 0.02 m5/s. a pitot static tube is placed in the flow. the radius of the pitot static tube is 1 mm. assuming the flow to be steady and the air to be at 300k, calculate the difference in total and static pressure if the diameter of the pipe is: (a) d 0.1 m d 0.05 m (c) d 0.01 m