Recent content by bricker9236

Homework Statement A hydraulic lift has two connected pistons with cross-sectional areas 25 cm2 and 250 cm2. It is filled with oil of density 510 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1200 kg at equal fluid levels? I got this answer - 120 kg...

Homework Statement A string of length l = 5 m weighs M = 10 kg . A pulse wave is traveling along the string. What is the speed v of the crest of the pulse, in the uint of m/s , if the tension of the string F is 200 N ? Homework Equations v= sqrt F/u u= m/L HELP: We can...

Homework Statement A student gets a 3 kg mass to oscillate up and down on bottom of a light vertical spring by pulling her hand up and down on the top end of the spring. The spring is a real spring with a spring constant of 89 N/m and a damping constant of 0.5 N sec/m. Homework...

I just tried figuring it out once again.. a=1500 b=48.463 c= 63.002 so then i used the quad equation to solve for X x= -b +- squareroot b2-4ac / 2a and x comes out to either be x= .0506461 x= -.0829547 then i put it back into the equation PE=.5(k)(x) and i tried...

Homework Statement A 5 kg block is placed near the top of a frictionless ramp, which makes an angle of 30o degrees to the horizontal. A distance d = 1.3 m away from the block is an unstretched spring with k = 3000 N/m. The block slides down the ramp and compresses the spring. Find the...

Homework Statement A 5 kg block is placed near the top of a frictionless ramp, which makes an angle of 30o degrees to the horizontal. A distance d = 1.3 m away from the block is an unstretched spring with k = 3000 N/m. The block slides down the ramp and compresses the spring. Find the...

rotating disk short question! Homework Statement If object is rotating on a disk with a constant angular speed, which of the following is zero? the object's tangential acceleration the object's centripetal acceleration both (a) and (b) are zero niether (a) or (b) are zero...

the final vertical velocity at max height would be 0 bc at any max height the velocity is always 0

Homework Statement a small airplane flies at a max airspeed of 255km/hr. (velocity relative to air). The wind is blwoing from the north at 63km/hr. The pilot heads this plane at a heading 41degrees south of straight east. a) what is the planes groundspeed (the velocity that the plane will...

Homework Statement A ball is thrown OFF a roof at a height 35.0m above ground. The ball hits the ground 29m from the base of the building. the max height of the balls trajectory is 12 m above the height from which the thrower released it. a) find the initial vertical component of the...