A box of mass m1 rests on a smooth, horizontal floor next to a box of mass m2 Suppose the force of 20.0 N pushes on two boxes of unknown mass. We know, however, that the acceleration of the boxes is 1.20 m/s? and the contact force has a magnitude of 4.45 N. Find the mass of box 1 and box 2. Express your answers using three significant figures separated by a comma. να ΑΣφ kg m1, m2 =

A box of mass m1 rests on a smooth, horizontal floor next to a box of mass m2 Suppose the force of 20.0 N pushes on two boxes of unknown mass. We know, however, that the acceleration of the boxes is 1.20 m/s? and the contact force has a magnitude of 4.45 N. Find the mass of box 1 and box 2. Express your answers using three significant figures separated by a comma. να ΑΣφ kg m1, m2 =

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Description: A box of mass m1 rests on a smooth, horizontal floor next to a box of mass m2. suppose the force of 20.0 N pushes on two boxes of unknown mass. Abox of mass mı rests on a smooth, horizontal floor next to a box of mass m2 Suppose the force of 20 0 N p

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter4: Dynamics: Force And Newton's Laws Of Motion

Section: Chapter Questions

Problem 7PE: (a) If the rocket sled shown in Figure 4.32 starts with only one rocket burning, what is the...

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Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 75.0 N, the second 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? (b) Draw a free-body diagram, including all forces acting on the system. (c) Calculate the acceleration. (d) What would the acceleration be if friction were 15.0 N?
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 T1in the cord attaching the baby to the scale? (c) What is tension T2, 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. The masses of the cords are negligible.
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(a) If the rocket sled shown in Figure 4.32 starts with only one rocket burning, what is the magnitude of its acceleration? Assume that the mass of the system is 2100 kg, the thrust T is 2.4104 N, and the force of friction opposing the motion is known to be 650 N. (b) Why is the acceleration not one-fourth of what it is with all rockets burning?
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The forces, F 1, F2, and F3 act on an object of mass m = 6.5 kg as shown below. a) Calculate the magnitude and direction of the net force acting on the particle. b) Calculate the particle’s acceleration. c) What should be the magnitude and direction of the fourth force such that the object remains in equilibrium?