. (5 marks) A piano has a mass of 515 kg. If the coefficient of static...
.. (5 marks) A 8.25 kg box is being pushed on a horizontal rough surface with a force of 55.0 N. The kinetic friction force on the box is 38.5 N. Calculate the magnitude of the box's accelera- tion.
A box of mass 50.95 kg is pushed up the slope . If the coefficient of static friction is 0.12 and the coefficient of kinetic friction is 0.02, find the force required to start pushing the box.
please qickly 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...
A block with a mass of 32.5 kg is pushed with a horizontal force of 150 N. The block moves at a constant speed across a level, rough floor a distance of 6.50 m. (a) What is the work done (in J) by the 150 N force? J (b) What is the coefficient of kinetic friction between the block and the floor?
You need to push a heavy box across a rough floor, and you want to minimize the average force applied to the box during the time the box is being pushed. Which method for pushing results in the minimum average force being applied to the box? Keep pushing the box forward at a steady speed, Push the box forward a short distance, rest, then repeat until finished, Push the box so that it accelerates forward at a constant rate. This...
A mass of 9 kg rests on a floor with a coefficient of static friction of 1.25 and coefficient of kinetic friction of kinetic friction of 0.1. One force is applied vertically downward of 10 Newtons and another force is applied at an angle of 15 degrees below the horizontal. Calculate what the magnitude this force needs to be in order to begin to move the mass. If the same amount of force is applied at the same angle above...
A box of mass 2 kg is pulled horizontally by a force that has magnitude of F= 10 N and slides across the floor in the positive x-direction , see figure below. If the coefficient of kinetic friction between the box and the surface is Uk= 0.25, what is the box's acceleration
1. A 500 kg wooden crate is on a wooden floor.The coefficient of static friction is 0.3. What is the minimum magnitude of a horizontal force needed to start it moving?
A 500 kg wooden crate is on a wooden floor.The coefficient of static friction is 0.3. What is the minimum magnitude of a horizontal force needed to start it moving? THIS QUESTION: What for is needed to keep the crate in question # 1 moving?
As shown in the figure below, a box of mass m = 51.0 kg (initially at rest) is pushed a distance d = 98.0 m across a rough warehouse floor by an applied force of FA = 200 N directed at an angle of 30.0° below the horizontal. The coefficient of kinetic friction between the floor and the box is 0.100. Determine the following. (For parts (a) through (d), give your answer to the nearest multiple of 10.) (a) work...