A student presses her palm by her thumb with a force of 75 N. What would be the pressure under her thumb having a contact area of 1.5 cm²? Ans. (5ｘ10⁵ Nm⁻²)


Given:  

Force applied by the student = F =  75 N
Area of contact = A = 1.5 cm² = 1.5 ｘ10⁻⁴  m² ( 1 cm² = 1o⁻⁴ m)

To Find:

Pressure = P =? 

Solution:   

As Pressure P is defined as force per unit area. So, 

P = `\frac {F}{A}`

 by putting values

P = `\frac {75 N}{1.5 ｘ10⁻⁴ m²}`

P = 50 ｘ1o⁴ kg m⁻³

or

P = 5 ｘ1o⁵ kg m⁻³

Thus, the student has pressed her palm by her thumb with a pressure of 5 ｘ1o⁵ kg m⁻³

************************************
************************************


Shortcut Links For 


1. Website for School and College Level Physics   
2. Website for School and College Level Mathematics  
3. Website for Single National Curriculum Pakistan - All Subjects Notes 

© 2020-21 Academic Skills and Knowledge (ASK)     

Note:  Write me in the comments box below for any query and also Share this information with your class-fellows and friends.