Question

the block is sitting at rest on teh floor . The normal force on the block is 3.00 N find the mass of the block

Answer 1

Answer:

m = 0.305 [kg]

Explanation:

When a body rests on a horizontal surface and is in balance we can say that normal force is the reaction of the weight of a body.

Weight is defined as the product of mass by gravitational acceleration.

$N=W=m*g$

where:

N = normal force = 3 [N]

g = gravity acceleration = 9.81 [m/s²]

m = mass [kg]

Now replacing:

$3=m*9.81\\m=0.305[kg]$