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In the diagram below there are three blocks that are all
In the diagram below there are three blocks that are all moving together with constant acceleration. Block C is being pulled to the right by a horizontal force F = 23.0 N. Block B is connected to Bloc… read more
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Beginning from rest, Physics Girl moves a fridge of mass
Beginning from rest, Physics Girl moves a fridge of mass 95.0 kg a displacement 3.15m by pushing it with a force F= 85 N directed at an angle 40∘ above the horizontal as shown in the diagram below. Th… read more
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Using pulleys of negligible friction, three blocks with
Using pulleys of negligible friction, three blocks with masses 6.7 kg, 9.2 kg and 8.8 kg are connected. When released, the 9.2 kg block accelerates to the right at 0.54 m/s^2. What is the coefficient … read more
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A 74 kg block slides downhill on an incline of 27° at
A 74 kg block slides downhill on an incline of 27° at constant velocity. A) What is the normal force acting on the 74 kg block? B) Moving at a constant velocity, what is the coefficient of sliding fri… read more
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A 140kg stationary crate is pulled by a force of 390 N along
A 140kg stationary crate is pulled by a force of 390 N along a horizontal surface. The coefficient of sliding friction between the crate and surface is μ = 0.17. What is the net force and acceleration… read more
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A 5 kg mass is pulled along a level surface with a force of
A 5 kg mass is pulled along a level surface with a force of 48 N applied at an angle of 32° to the horizontal. If the coefficient of kinetic friction between the mass and surface is μ = 0.79, what is … read more
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In a competition, a small robot accelerates forward at
In a competition, a small robot accelerates forward at 0.25m/s as it pushes a wood block of mass 1.6kg towards a basket. A friction force of 3.7 N exists between the block and floor. A) what would a f… read more
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In a competition, a small robot accelerates forward at
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A dog (mass of 11.5kg) sits on a sled (mass 4.9 kg) that is
a dog (mass of 11.5kg) sits on a sled (mass 4.9 kg) that is being pushed with a force of 33N on a flat snowy surface. if the acceleration of both is 1.6 m/s^2, what Is the coefficient of kinetic frict… read more
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I have a few questions of general physiscs need answering. A
i have a few questions of general physiscs need answering … read more
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Hows your math? See http://tinyurl.com/cb3ks6w The bottom
How's your math? See http://tinyurl.com/cb3ks6w The bottom portion shows the answer. Can you please explain how F is determined? I'm struggling to follow the steps.… read more
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2) a) Consider two forces, one having a magnitude of 10 N,
2) a) Consider two forces, one having a magnitude of 10 N, and the other having a magnitude of 15 N. What maximum net force is possible when combining these two forces? What is the minimum net force p… read more
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A mass-less spring of constant k 75N/m is fixed on the left
A mass-less spring of constant k=75N/m is fixed on the left side of a level track. A block with a mass of 0.5kg is pressed against the spring and compresses it a distance d=0.8m. The block (initially … read more
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a 10kg mass is on an incline of 35 degrees and it is connected
a 10kg mass is on an incline of 35 degrees and it is connected to a pulley that has a 20 kg mass hanging straight down. A) determine the acceleration of the system and the tension in the rope for the … read more
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A puck slides eastward over a surface which is Not ...
A puck slides eastward over a surface which is Not frictionless. Sketch a diagram for the puck. While sliding eastward over a surface which is not frictionless the puck also experiences a small, const… read more
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Imagine that the coefficient of static friction s between ...
Imagine that the coefficient of static friction µs between a 25-kg box and the floor is .55. How hard would you have to push on the box to get it moving? Imagine that you have to exert a horizontal fo… read more
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A 16.8 kg block is dragged over a rough horizontal ...
A 16.8 kg block is dragged over a rough horizontal surface by a constant force of 122 N acting at an angle of 26.7 degrees above the horizontal the block is displaced 82.2 m, and the coefficient of fr… read more
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The coefficients of friction between a block of mass 1 ...
The coefficients of friction between a block of mass 1 kg and a surface are Î¼s=0.64 and Î¼k=0.42. Assume the only other force acting on the block is that due to gravity, what is the magnitude of the … read more
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