A55-kg woman is wearing high heels.
if each heel has a circular cross-section 6.0 mm in diameter and she puts all her weight on one heel, how much pressure does that exert on the floor?

a)4.9 x 105 pa

b)1.9 x 10 pa

c)4.8 x 106 pa

d)1.9 x 105 pa

e)1.2 x 105 pa

Pressure,        

Explanation:

It is given that,

Mass of the woman, m = 55 kg

Diameter of the circular cross section, d = 6 mm

Radius, r = 3 mm = 0.003 m

Let P is the pressure exerted on the floor. It is equal to the force acting on woman per unit area. It is given by :

So, the pressure exerted on the floor is . Hence, this is the required solution.

i would think form in reponse to tensional forces

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000