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- https://phys.libretexts.org/Courses/Gettysburg_College/Gettysburg_College_Physics_for_Physics_Majors/15%3A_N1)_Newton's_Laws/15.07%3A_Newton's_Laws_of_Motion_(Exercises)The first child exerts a force of 75.0 N, the second exerts a force of 90.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 23.0 kg. (a) What is the system of interest if the acce...The first child exerts a force of 75.0 N, the second exerts a force of 90.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 23.0 kg. (a) What is the system of interest if the acceleration of the child in the wagon is to be calculated? (See the free-body diagram.) (b) Calculate the acceleration. (c) What would the acceleration be if friction were 15.0 N?
- https://phys.libretexts.org/Courses/Gettysburg_College/Gettysburg_College_Physics_for_Physics_Majors/18%3A_N4)_Motion_from_Forces/18.E%3A_Newton's_Laws_of_Motion_(Exercises)Consider the baby being weighed in the following figure. (a) What is the mass of the infant and basket if a scale reading of 55 N is observed? (b) What is tension T 1 in the cord attaching the baby to...Consider the baby being weighed in the following figure. (a) What is the mass of the infant and basket if a scale reading of 55 N is observed? (b) What is tension T 1 in the cord attaching the baby to the scale? (c) What is tension T 2 in the cord attaching the scale to the ceiling, if the scale has a mass of 0.500 kg? (d) Sketch the situation, indicating the system of interest used to solve each part.
- https://phys.libretexts.org/Courses/Muhlenberg_College/MC%3A_Physics_121_-_General_Physics_I/06%3A_Newton's_Laws_of_Motion/6.E%3A_Newton's_Laws_of_Motion_(Exercises)Let T 1 be the tension in the leftmost section of the string, T 2 be the tension in the section adjacent to it, and T 3 be the tension in the horizontal segment. (a) Find an equation for the tension i...Let T 1 be the tension in the leftmost section of the string, T 2 be the tension in the section adjacent to it, and T 3 be the tension in the horizontal segment. (a) Find an equation for the tension in each section of the string in terms of the variables m, g, and \(\theta\) . (b) Find the angle \(\phi\) in terms of the angle \(\theta\) . (c) If \(\theta\) = 5.10°, what is the value of \(\phi\)? (d) Find the distance x between the endpoints in terms of d and \(\theta\).
