describe the following tyre parts stating their advantages and disadvantages. i. groove ii. cuff iii. lugs​

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?

When subject to a steady load (within elastic range) over a long period of time, what is the major difference in material behavoir between steel and plastic?