A 200-Kg Uniform Plank Is Supported by the Floor at One

question 28

Short Answer

A 20.0-kg uniform plank is supported by the floor at one end and by a vertical rope at the other as shown in the figure. A 50.0-kg mass person stands on the plank a distance three-fourths of the length plank from the end on the floor.
(a) What is the tension in the rope?
(b) What is the magnitude of the force that the floor exerts on the plank?

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Definitions:

Indifferent Toward Mothers

A behavioral observation in attachment theory where infants or young children show no preference between their mothers and complete strangers.

Preoperational Stage

The second stage in Piaget's theory of cognitive development, occurring roughly between the ages of 2 and 7, characterized by symbolic thinking and egocentrism but a lack of operational thought.

Sensorimotor

Refers to the first stage in Piaget's theory of cognitive development, characterized by infants learning through physical interaction with their environment.

Concrete Operational

A stage in Piaget’s theory of cognitive development where children are able to think logically about concrete events.