Rigid bar ABCD is supported by 2 vertical bars. There is no strain in the vertical bars before load P is applied. After load P is applied, the normal strain in bar (2) is 0.0008 m/m. Determine the normal strain in bar (1) in units of m/m.

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false