physics
posted by y912f .
how do i do this
A force of 230 N applied on a hydraulic lift raises an automobile weighing 6500 N. If the applied force is exerted on a 7.0 m^2 piston, what is the area of the piston beneath the automobile?
a. 2.0 * 10^2 m^2
b. 4.0 m^2
c. 0.25 m^2
d. 0.0050 m^2
A water bed that is 1.5 m wide and 2.5 m long weighs 1055 N. Assuming the entire lower surface of the bed is in contact with the floor, what is the pressure the bed exerts on the floor?
a. 250 Pa
b. 260 Pa
c. 270 Pa
d. 280 Pa
thanks for any help!

physics 
drwls
Use the principal that the pressure throughout the fluid is equal. The force that is applied by (or to) a piston is therefore proportional to its area. The automobile piston area must be larger by a factor 6500/230
The answer to the secoind proboem is water weight/water bed area. Round off to two significant figures and you will agree with one of those answers 
physics 
ji
c.270

physics 
g
124
Respond to this Question
Similar Questions

physics
what formula do i need in order to solve this a force of 230 N applied on a hydraulic lift raises an automobile weighing 6500 N. If the applied force is exerted on a 7.0 m^2 piston, what is the area of the piston beneath the automobile? 
Physics
In a hydraulic lift, the radii of the pistons are 2.93 cm and 10.1 cm. A car weighing W = 11.0 kN is to be lifted by the force of the large piston. (a) What force Fa must be applied to the small piston? 
physics
In a hydraulic lift, the radii of the pistons are 2.93 cm and 10.1 cm. A car weighing W = 11.0 kN is to be lifted by the force of the large piston. (a) What force Fa must be applied to the small piston? 
physics
In a hydraulic piston set up, one circular piston has a diameter of 2 cm,while the other piston has a diameter of 6cm. Calculate the ratio of the force exerted by the larger piston to the force applied to the smaller piston? 
physics
In a hydraulic piston, the small piston has a diameter of 2cm and the large piston has a diameter of 6m. How much more force can the larger piston exert compared with the force applied to the smaller piston? 
Physics
In a machine shop, a hydraulic lift is used to raise heavy equipment for repairs. The sys tem has a small piston with a crosssectional area of 0.063 m2 and a large piston with a crosssectional area of 0.172 m2. An engine weighing … 
physics
The small piston of a hydraulic lift has an area of 0.10 m2. A car weighing 2.0 x 104 N sits on a rack mounted on the large piston. The large piston has an area of 0.50 m2. How large a force must be applied to the small piston to support … 
physics
The small piston of a hydraulic lift has a crosssectional area of 3.6 cm2 and the large piston has an area of 86 cm2. What force F must be applied to the small piston to maintain the load of 52 kN at a constant elevation? 
physics
The small piston of a hydraulic lift has a diameter of 8 cm and its large piston has a diameter of 40cm. The lift raises a load of 15,000 Newtons. A. Determine the force that must be applied to the small piston. B. Determine the pressure … 
Science
The small piston of a hydraulic lift, has an area of 0.01 m2. If a force of 250 N is applied to the small piston, find the force on the large piston if it has an area of0.05 m2.