Suppose two children push horizontally, but in exactly opposite directions, on a wagon containing a third child. The first child exerts a force of F₁ = 75.0 N, the second a force of F₂ = 93.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 20.0 kg. (a) What is the system of interest if the acceleration of the child in the wagon is to be calculated? (Select all that apply.) the child in the wagon the children outside the wagon the wagon (b) Which of the following diagrams correctly represents the free body diagram for the situation described here? F₁ f N W N F₂ F₁ (d) What would the acceleration (in m/s²) be if friction is 18.0 N? 0 m/s² f N W F₂ (c) Calculate the acceleration (in m/s2). 0 X What is the net force acting on the system? Did you consider the appropriate direction of the friction force? m/s² F₂ f N W F₁
Suppose two children push horizontally, but in exactly opposite directions, on a wagon containing a third child. The first child exerts a force of F₁ = 75.0 N, the second a force of F₂ = 93.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 20.0 kg. (a) What is the system of interest if the acceleration of the child in the wagon is to be calculated? (Select all that apply.) the child in the wagon the children outside the wagon the wagon (b) Which of the following diagrams correctly represents the free body diagram for the situation described here? F₁ f N W N F₂ F₁ (d) What would the acceleration (in m/s²) be if friction is 18.0 N? 0 m/s² f N W F₂ (c) Calculate the acceleration (in m/s2). 0 X What is the net force acting on the system? Did you consider the appropriate direction of the friction force? m/s² F₂ f N W F₁
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter5: Newton's Laws Of Motion
Section: Chapter Questions
Problem 35PQ: A black widow spider hangs motionless from a web that extends vertically from the ceiling above. If...
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