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

question 33

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:

Fixed Ratio

A schedule of reinforcement where a response is reinforced only after a specified number of correct responses, often leading to high rates of response.

Variable Interval

A schedule of reinforcement where a response is rewarded after an unpredictable amount of time has passed, in operant conditioning.

Variable Ratio

A reinforcement schedule in operant conditioning where a response is reinforced after an unpredictable number of responses.

Fixed Interval

A type of reinforcement schedule in operant conditioning where rewards are provided after a specific, constant amount of time has passed.