8. A child pulls a friend in a little red wagon with constant speed. If the child pulls with a force of16 N for 10.0m, and the handle of the wagon is inclined at an angle of 25° above the horizontal,how much work does the child do on the wagon? Assume the mass of the wagon system is45 kg.What is the coefficient of friction between the wagon and the ground?If the friction force remains the same when the force applied by the child is doubled, what willthe final speed of the wagon be after travelling from rest for a distance of 10m?3

Let's explain this problem in detail: A child pulls a friend in a little red wagon with a force of…

Answered: 8. A child pulls a friend in a little…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Similar questions

A crate is placed at the upper end of the 2.0 m long ramp that is inclined at 20° to the horizontal and allowed to slide down the ramp starting from rest. The crate has a mass of 150 KG and the coefficient of kinetic friction between the crate and then incline is 0.25. Draw a diagram showing all the forces acting on the crate. How much work is done by the gravity on the crate during the slide? How much work is done by friction during the slide? Use the work energy theorem to calculate the speed attained at the bottom of the ramp.Also,Which force does no work during the slide, and why?
A crate of mass 12.0 kg is pushed up a rough incline with an initial speed of 2.5 m/s the pushing force is 150 N parallel to the incline, which makes an angle of 25° with the horizontal. The coefficient of kinetic friction is 0.4, and the crate is pushed 4.0 m. a) What is the acceleration of the box? b) How much work is done by the frictional force on the crate? c) What is the speed of the crate after being pulled 4.0 m?
A 20 kg box is resting on horizontal surface initially. Then a F = 50 N force pulls on the box by a cord at an angle of 20 degrees above horizontal. The kinetic frictional coefficient is 0.20. 1.What is the magnitude of acceleration of the box, a=? 2.What is the kinetic energy of the box after 3.0 seconds? (hint: calculate the velocity first v =?) 3.What is the work done by the force Fin 3.0 second? (hint: calculate the distance first, d = ?)
An object of 1.0 kg mass is pulled up an inclined plane by a constant force of 10 N that causes a displacement of 0.50 m. The angle of inclination with the horizontal is 30°. Neglect friction and use g = 10 m/s2. What is the work done by the 10 N force on the object along the inclined plane?
Piano movers wish to load a truck using a ramp from the ground to the rear of the truck. One of the movers claims that less work would be required if they used a ramp at an angle above the ground. Another mover claimed that it is less work to just pick it straight up. Who is right? possible answers: -there is not enough information to make a claim -it is less work using a ramp -it is the same amount of work Wrong answer:is it more work using a ramp (homework question)
2. A 3.00 kg object is initially at rest on a horizontal surface. An applied force acts on the object in the +x-direction. Assume there is friction in the system as well. The Net Work done on the object is 50.0 J over a distance of 7.00 m. a) What is the object's Change in Kinetic Energy? Do Not Overthink this! b) What Net Force acted on this object?
#1
1. Consider a constant force F of magnitude 10 N acting over a displacement d of magnitude 3 m. The directions of these vectors are shown in the diagram. F A) Find the components of each of these vectors and write F and d in terms of the unit vectors. 70° 40° B) In Joules, find the work F · d by multiplying the corresponding components of each vector. C) Find the work using the relation F · d = Fd cos 0. Check that your answer agrees with B).

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