A wooden pallet is stacked with 10 bags of flour. Each bag of flour has a...
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A wooden pallet is stacked with 10 bags of flour. Each bag of flour has a mass of 100 kg. How much work is accomplished in sliding the pallet over a wooden floor a distance of 50 cm? If the estimate the friction coefficients between the pallet and the wooden floor is 0.4.
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A wooden pallet is stacked with 10 bags of flour. Each bag of
flour has a...
Two Boxes (with masses 2kg and 7kg) are stacked on top of each other and connected...
Two Boxes (with masses 2kg and 7kg) are stacked on top of each
other and connected through a pulley system as shown. The
coefficients of friction between the boxes ar
=0.5 and
=0.3. Assume the floor is frictionless
A. apply newton's second law to free body diagrams, write out
the equation.
B. find an equation for the magnitude of
where the boxes are just on the verge of sliding over each other.
Call that magnitude
1. What force is necessary to pull a 20.0-kg wooden box at a constant speed over...
1. What force is necessary to pull a 20.0-kg wooden box at a constant speed over a wooden floor at a constant speed over a wooden floor by a rope that makes an angle of 30° above the horizontal? The coefficient of kinetic friction (wood on wood) is 0.30. 2. A 50-kg balikbayan box rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the box just begins to move when your force...
A block of mass 3 kg is sliding up a rough, 30° ramp. Its speed drops...
A block of mass 3 kg is sliding up a rough, 30° ramp. Its speed drops from 6 m/s to 2 m/s over a travel distance of 2 meters. .a. What is the change in the kinetic energy of the block? b. How much total work is done on the block by gravity? c. How much total work is done on the block by friction? d. What is the change in the gravitational potential energy of the block? e. What...
Please show work for each part. A factory worker pushes a 26.5-kg crate a distance of...
Please show work for each part.
A factory worker pushes a 26.5-kg crate a distance of 4.3 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and the floor is 0.27 Suppose the worker pushes downward at and angle of 340 below horizontal. (a) What magnitude of force must the worker apply? (b) How much work is done on the crate by this force? (c) How much work...
Three boxes, with masses m1, m2, m3 (kg) are stacked vertically; the bottom box is in...
Three boxes, with masses m1, m2, m3 (kg) are stacked vertically; the bottom box is in contact with a rough floor and the surfaces between each box are also rough. An external force Fext (N) acts on the bottom box at an angle of XX degrees relative to the horizontal, as a result of which all three masses accelerate together with an acceleration a (m/s^2). a) Identify the number of forces acting on each box, b) starting with the top...
A spring is mounted horizontally. A crate, which has a mass of 8.5 kg is pressed...
A spring is mounted horizontally. A crate, which has a mass of 8.5 kg is pressed against the spring with a force of 350N As a result the spring is compressed a distance of 82.0 cm The mass is then released and is allowed to slide along the horizontal surface which has friction. The coefficient of kinetic friction between the crate and the surface is 0.65 How much work will be done on the crate by the frictional force from...
As shown in Figure 3(a), a wooden block B with mass mg 2.4 kg on a rough inclined plane is connected to a massless sp...
As shown in Figure 3(a), a wooden block B with mass mg 2.4 kg on a rough inclined plane is connected to a massless spring (k 160 N/m) by a massless cord passing over a pulley P of radius R 0.25 m and mass M, 0.60 kg. The angle of the inclined plane is 0 37 and the coefficients of static and kinetic frictions are g 0.35 and A 0.30 respectively The frictional force at the axle of the pulley...
1) A cart for hauling ore out of a gold mine has a mass of 447...
1) A cart for hauling ore out of a gold mine has a mass of 447 kg, including its load. The cart runs along a straight stretch of track that climbs a shallow 4.63∘ incline. A donkey, which is trudging along and to the side of the track, has the unenviable job of pulling the cart up the slope with a 436 N force for a distance of 115 m by means of a rope that is parallel to the...
A stone used in the sport of curling has a mass of 18.0 kg and is...
A stone used in the sport of curling has a mass of 18.0 kg and is initially at rest, sitting on a Flat ice surface. It is pushed with a constant force of magnitude 24.0N over a distance of 4.00 m. (You may assume that any friction between the stone and the ice is negligible.) (a) (i) What is the acceleration of the stone and what is the work done in accelerating it? (ii) By considering the conservation of energy...
Two Boxes (with masses 2kg and 7kg) are stacked on top of each
other and connected through a pulley system as shown. The
coefficients of friction between the boxes ar
=0.5 and
=0.3. Assume the floor is frictionless
A. apply newton's second law to free body diagrams, write out
the equation.
B. find an equation for the magnitude of
where the boxes are just on the verge of sliding over each other.
Call that magnitude
1. What force is necessary to pull a 20.0-kg wooden box at a constant speed over a wooden floor at a constant speed over a wooden floor by a rope that makes an angle of 30° above the horizontal? The coefficient of kinetic friction (wood on wood) is 0.30. 2. A 50-kg balikbayan box rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the box just begins to move when your force...
Please show work for each part.
A factory worker pushes a 26.5-kg crate a distance of 4.3 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and the floor is 0.27 Suppose the worker pushes downward at and angle of 340 below horizontal. (a) What magnitude of force must the worker apply? (b) How much work is done on the crate by this force? (c) How much work...
As shown in Figure 3(a), a wooden block B with mass mg 2.4 kg on a rough inclined plane is connected to a massless spring (k 160 N/m) by a massless cord passing over a pulley P of radius R 0.25 m and mass M, 0.60 kg. The angle of the inclined plane is 0 37 and the coefficients of static and kinetic frictions are g 0.35 and A 0.30 respectively The frictional force at the axle of the pulley...
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