Question

what is the main force that is in action in the following picture. *
spring force
buoyancy
tension
gravitational
normal
applied
thrust
magnetic
electrostatic

Explanation:

The person is pushing the lawn - mower. An applied force is a force that is applied to an object by a person or another object. Here, the person is exerting a force on the lawn - mower to make it move.

Answer:

Applied