A bird of mass I kg stands on the midpoint of a telephone wire of length 50 m that suspends between two pillars, so that the midpoint of the wire moved by a vertical distance of 0.2 m. Calculate the magnitude of the tension force (FT) that acts on
the wire because of the bird (neglecting the wire's weight). (g = 9.8 m/s)​

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

How to calculate voltage drop in a series circuit