Periodic motiona block of mass m is attached to a horizontal spring with force constant k. it is moving with simple harmonic motion of amplitude a. a) calculate how much of the energy of the motion is kinetic at x=1/4 a. b) if one adds a mass smoothly in a vertical drop at x=a, calculate what happens to a, t and omega.

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.

Coal contains energy. a. light b. kinetic c. chemical d. mechanical