Suppose spring. the spring a cart of mass 1 slug is attached to a wall by constant is k100 and the spring is initially stretched 1 foot beyond equilibrium and released. if a periodic force fe(t) 20 sin (10 ) is applied to the system, determine the motion of the cart. in particular, what is the cart's maximum displacement from the wal1? show all your steps, do not se any formulas from your book.

1. consider the case in which air fills air shocks on a truck trailer. the pressure in the shocks is 2 mpa. the temperature is 300 k. the diameter of the shock piston is 10 cm and the initial length of the cylindrical cavity containing the compressed air is 40 cm. a. the truck is gradually loaded over a period of a day in a static setting. the temperature is held constant for the atmosphere and thus for the gas shock. calculate the compressibility of the air in the shock for this condition when the truck is initially being loaded. b. if the shocks were loaded in a dynamic setting by driving over bumps, what would be the compressibility? state your assumption. c. what is the initial load on the shock if the shock is in an atmospheric 100 kpa? d. if the shock is compressed using the process described in part a, and the air shock compressed air cavity length decreases to 20 cm, what is the additional load applied to the shock?

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

Part of a control linkage for an airplane consists of a rigid member cb and a flexible cable ab. if a force is applied to the end b of the member and causes it to rotate by θ = 0.5°, determine the normal strain in the cable. originally the cable is unstretched.