Question

A block sliding on the ground where Mk = 0.243 experiences a 24.7 N friction force. What is the normal force acting on the block?

A) 101.86 N
B) 102.56 N
C) 100.36 N
D) 99.65 N

Answer 1

The normal force acting on the block is 0 N.

Step-by-step explanation:

The normal force acting on the block can be calculated using the formula:

Fn = Fg - Ff

Where Fn is the normal force, Fg is the gravitational force and Ff is the friction force. In this case, the friction force is given as 24.7 N, and the gravitational force can be calculated as the weight of the block, which is mass times acceleration due to gravity (9.8 m/s²). Assuming the block has a mass of 1 kg, the gravitational force is 9.8 N. Therefore,

Fn = 9.8 N - 24.7 N = -14.9 N

Since the normal force cannot be negative, we can conclude that the normal force acting on the block is 0 N. This means that the block is not experiencing any normal force.