An 16.0 kg couch is pushed with 63 N of force for 14 s. The coefficient of kinetic friction
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An 16.0 kg couch is pushed with 63 N of force for 14 s. The coefficient of kinetic friction is 0.220 and the coefficient of static friction between the couch and the floor is 0.440.
a) What is the total work done on the couch by the pushing force during those 14.0 seconds.
b) What is the total work done on the couch during those 14.0 seconds.
c) If the couch was instead 32.0 kg, how much work is done on the couch by the pushing force during those 14.0 seconds.
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- A boy pulls a 26.0-kg box with a 120-N force at 36° above a horizontal surface. If the coefficient of kinetic friction between the box and the horizontal surface is 0.15 and the box is pulled a distance of 40.0 m, what is the work done by the friction force on the box?A 5.40-kg box rests on a horizontal surface. The coefficient of kinetic friction between the box and surface is µk 0.410. A horizontal force pulls the box at constant velocity for 23.0 cm. Find the work done by the applied horizontal force. Submit Answer Tries 0/10 Find the work done the frictional force. Submit Answer Tries 0/10 Find the work done by the net force. Submit Answer Tries 0/10A 65.0kg crate is initially moving at 5.00m/s up a rough ramp. A horizontal force P=400N pushes the crate 8.25m up the ramp, which is inclined 15° with the horizontal. When sliding, the friction force on the crate is 125N. a) Draw the free body diagram for the crate. b) Apply the definition of work: Wk=FAs to find the work done on the crate by each force. c) Find the network done on the crate. d) Is the crate speed decreasing, constant, or increasing? Explain how you know. e) Find the speed of the crate after it has traveled the 8.25m using energy ideas (do not use Frema)
- Questions B, C, and D pleaseA 20.0 kg box slides up a 12.0 m long incline at an angle of 30.0 degrees with the horizontal. A force of 150 N is applied to the box to pull it up the incline. The applied force makes an angle of 10.0 degrees to the incline. What is the work done by the applied force? Multiple Choice 1,870 J 1,770 J 1,500 J 1,450 Jmike used his super muscle power to pull a box initially at rest, up an inclined plane. The inclined plane makes an angle of 35o with the horizontal and mike applied a force of 250 N parallel to the incline. The mass of the box is 25.0 kg and the coefficient of kinetic friction between the box and the surface is 0.45. The box moves up the incline at a distance of 5.0 m. Find the work done by the applied force. g = 9.81 m/s2
- The force on a particle is directed along an x axis and given by F = Fo(x/xo - 1) where x is in meters and F is in Newtons. If Fo = 1.2 N and Xo = 2.7 m, find the work done by the force in moving the particle from x =0 to x = 2xo m. Number i UnitsA block of mass 2.28 kg starts sliding from rest down an incline plane for 25 cm. If the block has a velocity of 1.14 m/s, and the incline has an angle measured from the +x axis of 37 degrees then: a. How much work did kinetic friction do on the block? b. What is the coefficient of kinetic friction between the block and the incline?505
- 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?2. A cart is pulled a distance D on a flat, horizontal surface by a constant force F that actsat an angle θ with the horizontal direction. The other forces on the object during thistime are gravity (Fw), normal forces (FN1) and (FN2), and rolling frictions Fr1 and Fr2,as shown below. What is the work done by each force?A crate with mass m = 33.3 kg being pushed up an incline that makes an angle φ = 22.7 degrees with horizontal. The pushing force is horizontal, with magnitude P, and the coefficient of kinetic friction between the crate and the incline is μ = 0.358. Consider the work done on the crate as it moves a distance d = 5.32 m at constant speed. a. What is work done by the pushing force, in joules? b. What is the work done by friction, in joules? c. What is the work done by gravity, in joules? d. What is the net work, in joules?