Homework Statement
A hydraulic lift is used to jack a 970 kg car .12m off the floor. The diameter of the output piston is .18 m, and the input force is 270 N.
If the input piston moves .13 m in each stroke, how high does the car move up for each stroke?
2-3. Relevant equations and attempt at...
I'm a total physics noob, and as I was reading my physics textbook, I came upon this stump.
I know that for waves, Vmax2=(A)(square root of k/m). Does this apply to a pendulum because its motion is wavelike?
If so, how does the spring constant k play into this when the pendulum has no spring?
Homework Statement
Estimate the air pressure inside a category 5 hurricane, where the wind speed is 300 km/hr.
Homework Equations
P=F/A
The Attempt at a Solution
I converted km/hr to m/s.
V=83.33m/s.
That's all I can get. I don't know the area of a category 5 hurricane or the...
So the tire area is .0022m2?
Then for 4 tires, the area is .0088m2.
m= (PA)/g = (2.4 x 105)(.0088) / (9.8) = 215.510 kg
If you round that, it should be 2.2 x 102 kg, but the real answer is 2.2 x 103...
What am I missing?
Gauge Pressure of Tires -- find car mass
Homework Statement
The gauge pressure in each of the four tires of an automobile is 240 kPa. If each tire has a "footprint" of 22.0 cm-squared, estimate mass of the car.
P=240 kPa
A=22.0 cm-squared
g=9.8 m/s^2
Homework Equations
P=F/A
1 atm =...