Question

A student presses her palm by her thumb with a force of 75 N. How much would be the pressure under her thumb having contact area 1.5 cm2 ? (5×105 Nm – 2) *

2 points

5 x 103 Nm – 2

5 x 108 Nm – 2

5 x 104 Nm – 2

5 x 105 Nm – 2

Submit
A student presses her palm by her thumb with a force of 75 N. How much would be the pressure under her thumb having contact area 1.5 cm2 ?
option 1: 5 x 103 Nm – 2
option 2: 5 x 108 Nm – 2. option 3: 5 x 104 Nm – 2. option 4: 5 x 105 Nm – 2​

Answer 1

Pressure = force / Area

force = 75 N and

Area = 1.5 cm² = 1.5 / 10⁴ m²

pressure = 75 / ( 1.5 × 10⁴)

pressure = 500 × 10³ Pascal

= 500 × 10³ Nm-2