Question

A truck is of mass 10,000 kg , its tyres exert a pressure of 500,000Pa. The surface area of tyres in contact with ground is:

Answer 1

Answer:

.02 m2

Explanation:

Pressure =Mass/Area

Answer 2

Given: A truck is of mass 10,000 kg. The tyres exert a pressure of 500,000 Pa.

To find: Surface area of tyres in contact with ground

Explanation: Acceleration due to gravity= 10m/s^2

Weight of truck = mass of truck * acceleration due to gravity

= 10,000* 10

= 100,000

= 10^5 N

Pressure= 500,000 Pa= 5* 10^5 Pa

Pressure (P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

Therefore, Pressure= Weight/ Surface area

=> Surface area= Weight/ Pressure

= 10^ 5/ 5* 10^5

= 0.2 m^2

Therefore, the surface area of tyres in contact with ground is 0.2 m^2.