1. A box whose mass is 4.3 kg. initially at rest, is pushed in a straight...
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2) A 20 kg box initially at rest is pushed 5 m along a rough, horizontal floor with a constant applied horizontal force of F = 120 N. The coefficient of kinetic friction between box and floor is 0.1, find; a) (12 p) Calculate the work done by the applied force, the gravitational force, the normal force, the friction force (Wr.W, W.,WR) b) (4 p) Find the change in kinetic energy of the box c) (4 p) Find...
6 points PSE6 7.P031. 4. My Notes A 38.0 kg box initially at rest is pushed 5.20 m along a rough, horizontal floor with a constant applied horizontal force of 135 N. If the coefficient of friction between box and floor is 0.300, find the following. (a) the work done by the applied force (b) the increase in internal energy in the box-floor system due to friction (c) the work done by the normal force J (d) the work done...
A box of mass 40 kg is initially at rest on a flat floor. The coefficient of kinetic friction between the box and the floor is µk = 0.40. A woman pushes against the box with a force of 250 N that makes an angle of 30° with the horizontal until the box attains a speed of 1.0 m/s. (a) What is the change of kinetic energy of the box? (b) What is the work done by the friction force...
A 4.0 kg box is initially at rest on a table. The box is pushed for 3.0 m with a horizonta force of 25 N. The frictional force between the box and table is 12 N. speed of the box after the box is pushed 3.0 meters. 2. Determine the Initial Final g s dis
A box with a mass of 10 kg is pushed with a constant force of 100 N a distance of 3.0 m up a ramp that makes an angle of 30 from the horizontal. The coefficient of kinetic friction between the box and the ramp is 0.35. a. Compute the work done by each of the four forces acting on the box. b. Assuming the box starts at rest, determine the speed of the box at it reaches a distance...
Starting from rest, a 3.2-kg box is pushed on a horizontal floor with a force of 482.6 N parallel to the floor. The coefficient of kinetic friction between the box and the floor is 0.5. What is the kinetic energy of the box after it has been pushed with the constant force of 5.8 meters?
h d2 d1 A girl pulls a box of mass m = For the first d1 = 6 m, there is no friction between the box and the floor. For the next d2 4 m the coefficient of friction between the box and the floor is u 0.2. 3 kg across a floor with a constant horizontal force F 25 N. Initially the block is at rest. 1) What is the work done on the box by the girl in...
-2 points SerCP11 5.1 A box with a mass of 36.0 kg is pushed with a horizontal force of 1 (a) What is the work done (in 3) by the 150 N force? My Notes Ask Your 50 N. The box moves at a constant speed across level, rough surface a distance of S.40 m (b) What is the coefficient of kinetic friction between the box and the surface? Need Help? Pad Show My Work o
A box of mass ? is pushed a distance Δ? across a level floor by a constant applied force ?. The coefficient of kinetic friction between the box and the floor is ?. Assuming the box starts from rest, express the final velocity ?f of the box in terms of ?, Δ?, ?, ?, and ?. A box labeled M sits on the left side of a table. An arrow touching the left side of the box representing the applied...
In a garden nursery a large box of flower seeds (mass 18kg) is pushed 1.6m along a horizontal floor by a woman who is exerting a force of 1.5E2 N at 22o below the horizontal. The coefficient of kinetic friction between the box and the floor is 0.55. a) Use Newton's laws of motion to determine the magnitudes of the normal force and friction force on the box. b) use conservation of energy to determine the final speed of the...