Question

A painter sets up a uniform plank so that he can paint a high wall. The plank is 2 m long and weighs 400 Ν. The two supports holding the plank are placed 0.2m from either end.
A painter now stands on the plank closest to the left hand support. Describe what now happens to the forces provided by the support when the painter is on the plank.

Answer 1

The forces provided by the support will have to increase proportionally to the weight or force of the painter acting downward.

What are balanced forces?

Balanced forces are forces that are equal but oppositely directed in their line of action.

When forces are balanced, there is no net movement of the object that the forces are acting upon.

The uniform plank is balanced by the supports.

When the painter stands on the plank, the force of gravity or the weight of the painter acts downwards.

In order for the forces to be balanced, the forces provided by the support increase according to the third law of motion which states that action and reaction are equal and opposite.

Learn more about balanced forces at: brainly.com/question/28337403

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