Draw Free body diagram of all the forces acting on the child as the system? Draw Free body diagram of all the forces acting on the wagon as th system? Dram Free body diagram of all the forces acting on the man as the system?

Draw Free body diagram of all the forces acting on the child as the system? Draw Free body diagram of all the forces acting on the wagon as th system? Dram Free body diagram of all the forces acting on the man as the system?

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 9PE: Suppose two children push horizontally, but in exactly opposite directions, on a third child in a...

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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?
Professional Application During a visit to the International Space Station, an astronaut was positioned motionless in the center of the station, out of reach of any solid object on which he could exert a force. Suggest a method by which he could move himself away from this position, and explain the physics involved.
Two teams of nine members each engage in tug-of-war. Each of the first team’s members has an average mass of 68 kg and exerts an average force of 1350 N horizontally. Each of the second team’s members has an average mass of 73 kg and exerts an average force of 1365 N horizontally. (a) What is magnitude of the acceleration of the two teams, and which team sins? (b) What is the tension in the section of rope between the teams?
While sliding a couch across a floor, Andrea and Jennifer exert forces FA and FJ on the couch. Andrea’s force is due north with a magnitude of 130.0 N and Jennifer’s force is 32 east of north with a magnitude of 180.0 N. (a) Find the net force in component form. (b) Find the magnitude and direction of the net force. (c) If Andrea and Jennifer’s housemates, David and Stephanie, disagree with the move and want to prevent its relocation, with what combined forceFDS should they push so that the couch does not move?
Give reasons for the answers to each of the following questions: (a) Clan a normal force be horizontal? (b) Can a normal force be directed vertically downward? (c) Consider a tennis ball in contact with a stationary floor and with nothing else. Can the normal force be different in magnitude from the gravitational force exerted on the ball? (d) Can the force exerted by the floor on the hall be different in magnitude from the force the ball exerts on the floor?
The ratio of the force exerted on the foot by the ground to the persons body is 3.5 N/mg if the only forces acting on person are (i) the forced exerted by the ground and (ii) the persons weight, the magnitude of the person acceleration is 25 m/s^2.
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Assume the three blocks portrayed in Figure move on a friction less surface and a 42-N force acts as shown on the 3.0-kg block. Determine (a) the acceleration given this system, (b) the tension in the cord connecting the 3.0-kg and the 1.0-kg blocks, and (c) the force exerted by the 1.0-kg block on the 2.0-kg block.
A 4.00-kg block rests between the floor and a 3.00-kg block as shown in the above figure. The 3.00-kg block is tied to a wall by a horizontal rope. If the coefficient of static friction is 0.800 between each pair of surfaces in contact, what force must be applied horizontally to the 4.00-kg block to make it move?
5) An equivalent force-couple system: Three forces F1 = 100 N, F2 = 50 N, and F3 = 30 N act on a structure as shown in the F1 figure where a = 30°, 0 = 60°, L = 1 m and h = 0.5 m. Find the B. F2 el equivalent force-couple system about point D. C h
Two blocks are in contact on a frictionless table. A horizontal force F is applied to M₂, as shown. F M2 M1 If M₁ = 1.42 kg, M₂= 3.80 kg, and F = 4.95 N, find the magnitude of the contact force between the two blocks. 0 If instead an equal but oppositely directed force -F is applied to M₁ rather than M₂, find the magnitude of the contact force between the two blocks.
Andy and Calamity rope a 400 kg bull, stationary at the origin. Andy's horse pulls his rope 800 N Northward and 600 N Eastward; Calamity's horse pulls her rope 910 N at an angle 22.6° East of Southward. [a) determine the South and East components from Calamity's rope Force applied to the bull. ] [b) determine the total Force magnitude applied to the bull, ] [ c) and the direction angle for that total Force (+ angle ccw from East). ] [ d) determine the bull's initial acceleration. 1 [ e) determine how long (time) before the bull's speed will be 0.25 m/s] f) The bull maintains 0.25 m/s constant velocity even though Andy's and Calamity's horses pull constantly as described. The bull's Force into the ground is applied to the bull. the rope Forces