A car is traveling along the circular curve of radius r = 400ft. At the instant shown, its angular rate of rotation is 0 = 0.4 rad/s, which is increasing at the rate of 0 = 0.2 rad/s². Determine the magnitudes of the car's velocity and acceleration at this instant. = 0.4 rad/s. Ö= 0.2 rad/s² 400ft

The uniform rod in the figure shown weighs 420 kN and has its center of gravity at G. a) Compute the reaction at the smooth surface A. b) Determine the reaction at the smooth surface B. c) Calculate the tension in the cable. 420KN G Cable 4m 2 m

these last two practice problema are killing me! please break down!

Keeping all other features the same, if you double the length of a column, which of the following best describes how the critical buckling load (P) will be affected? O Per will be 1/2 of its original value O Per will be 1/4 of its original value O Per will be 4 times its original value O Per will be 2 times its original value