Question

A 44-kg child steps onto a scale and the scale reads 430 N. What is the magnitude of the normal force acting on the child? (a) 44 N (c) 430 N (e) 860 N (b) 215 N (d) 645 N

Answer 1

its 430 N......coz scale reads the normal reaction

Answer 2

The magnitude of the normal force acting on the child is (c) 430 N.

• The normal force is the component of the force that acts in the perpendicular direction with respect to the surface.
• The normal force is a contact force and hence acts only when surfaces are in contact.
• The magnitude of the normal force is such that the net force is zero.
• Hence, the normal force will be 430 Newton.