Question

A girl of weight 400 N holding a bag of weight 40 N on her head. If she is standing on semicircular heels of periphery 72/7 cm, then net pressure exerted on the floor by the girl is​

Answer 1

Answer:

Step-by-step explanation:

HAVE YOU APPLIED FOR AAKASH ANTHE (AKASH NATIONAL TALENT HUNT EXAM) class viii.

So answer for this question will be--

Option no.3 that is 3.5×10^5 N/m^2

Answer 2

Answer:$26.13 N/cm^2$

Step-by-step explanation:

Given

Weight of girl=400 N

Weight of bag=40 N

Periphery of heels$=\frac{72}{7} cm$

$2\pi \times r=\frac{72}{7}$

r=1.636 cm

Area $=\pi r^2$

$A=8.417 cm^2$

Net weight =400+40=440 N

Net Pressure by girl on floor

$P=\frac{W_{net}}{A_{net}}=\frac{440}{2\times 8.417}$

$P=26.13 N/cm^2$

So Pressure exerted by Floor on girl