A 14.0-kg chair is at rest on a flat floor. The coefficient of static friction between

Question

the chair and the floor is 0.450. A person tries to move the chair by pushing on the
chair with a force directed at an angle of 30„a below the horizontal. What is the
minimum force that the person must apply in order to move the chair?

Answer 1

See previous post.

Answer 2

First off the normal force is m*a so 14kg * 9.8 is 137.2N. Since the person isn't pushing straight not all force goes directly to moving the chair. So 137.2=xcos30. x=158.42N.