According to frictional force, the normal force is 3782.61 N.
We need to know about frictional force to solve this problem. The frictional force is the force against the object to move. The magnitude of the frictional force can be determined as
Ff = N . μ
where Ff is the frictional force, N is normal force and μ is coefficient of friction
From the question above, we know that
Ff = 870 N
μ = 0.23
By substituting the given parameters, we can determine the normal force
Ff = N . μ
870 = N . 0.23
N = 870 / 0.23
N = 3782.61 N
Hence, the normal force is 3782.61 N.
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