Pressure exerted bt the floor over the area of contact

Reference no: EM13558259

A 40.0 kg ballet dancer stands on her toes during aperformance with four square inches (26.0 cm^2) in contact with thefloor. What is the pressure exerted bt the floor over the area of contact in the following cases?

a) if the dancer is stationary?
b) if te dancer is leaping upwards with an accerleration of3.00 m/s^2

Reference no: EM13558259

Questions Cloud

Find the work done by the gas if the initial volume : Gas in a container expands at a constant pres- sure of 88 atm. Find the work done by the gas if the initial volume is 5 L and the final volume is 10 L . Answer in units of J

Parallel-plate capacitor is made of two flat metalplates : A parallel-plate capacitor is made of two flat metalplates pressed against a thin slab of dielectric material. Thecapacitor is connected to a power supply, and a potentialdifference of 90 V is applied to the plates.

New homeowner is pushing a box across the floor : While moving in, a new homeowner is pushing a box across the floor at a constant velocity. The coefficient of kinetic friction between the box and the floor is 0.41. The pushing force is directed downward, at an angle theta below the horizontal.

What is the temperature of the newly painted radiator : In an old house, the heating system uses radiators, which arehollow metal devices through which hot water or steam circulates.In one room the radiator has a dark color (emissitivity = 0.891).It has a temperature of 66.1 oC.

Pressure exerted bt the floor over the area of contact : A 40.0 kg ballet dancer stands on her toes during aperformance with four square inches (26.0 cm^2) in contact with thefloor. What is the pressure exerted bt the floor over the area ofcontact in the following cases?

Electric force of attraction betweenan iron nucleus : What is the magnitude of the electric force of attraction betweenan iron nucleus (q = +26e) and its innermost electron if thedistance between them is 1.5 x 10-12m?

What was the speed of the ball at maximum hieght : At Green Hills golf course, the ninth hole par 3 isfrom an elevated tee box. With a laser rangefinder, a golfermeasures the flag to be 143 m 18.5 degrees below thehorizontal.

What is the charge of the region : A positively charged, small region in a thundercloud creates anelectric potential of 67.6 mV at ground level,301 m below. What is the charge of the region?

Electron balances the gravitational force on first electron : An electron is in a vacuum near earth's surface and located at y =0 on a vertical y axis. At what value of y should a second electronbe placed such that its electrostatic force on the first electronbalances the gravitational force on the first electr..

User Account

All Pages