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A: Given: Mass of crate: 25 kg kinetic friction: μk=0.350 Force F1 has two components in x and y…
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Q: The drawing shows a 22.5-kg crate that is initially at rest. Note that the view is one looking down…
A: Given that--- Mass = 22.5 kg. Coefficient of kinetic friction = 0.395. Angle = 55 degree. We have…
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Q: car (m = 1980 kg) is parked on a road that rises 13° above the horizontal. What are the magnitudes…
A: Mass of car (m) = 1980 kg Angle of road with the horizontal (θ) = 13o above horizontal
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A: SOLUTION IS GIVEN AS
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Q: A car (m = 1790 kg) is parked on a road that rises 17° above the horizontal. What are the magnitudes…
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A 1200-kg trailer is hitched to a 1400-kg car. The car and trailer are traveling at 72 km/h when the driver applies the brakes on both the car and the trailer. Knowing that the braking forces exerted on the car and the trailer are 5000 N and 4000 N, respectively, determine (a) the distance traveled by the car and trailer before they come to a stop, (b) the horizontal component of the force exerted by the trailer hitch on the car.
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- In the figure, a block of mass m = 3.71 kg is pulled along a horizontal frictionless floor by a cord that exerts a force of magnitude F = 12.7 N at an angle 0 = 26.0°. (a) What is the magnitude of the block's acceleration? (b) The force magnitude F is slowly increased. What is its value just before the block is lifted (completely) off the floor? (c) What is the magnitude of the block's acceleration just before it is lifted (completely) off the floor? (a) Number i Units (b) Number i Units (c) Number i Units > >A car (m = 1600 kg) is parked on a road that rises 12° above the horizontal. What are the magnitudes of (a) the normal force and (b)the static frictional force that the ground exerts on the tires?A 5.80 kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.450. Determine the kinetic frictional force that acts on the box for each of the following cases.(a) the elevator is stationary N(b) the elevator is accelerating upward with an acceleration whose magnitude is 2.20 m/s2 N(c) the elevator is accelerating downward with an acceleration whose magnitude is 2.20 m/s2 N
- A semi is traveling down the highway at a velocity of v = 27.5 m/s. The driver observes a wreck ahead, locks his brakes, and begins to slide. The truck has mass m and a coefficient of kinetic friction between the tires and the road of μk = 0.16. Write an expression for the sum of the forces in the x-direction for the truck while braking? Using the results from Part (a), input an expression for the truck's acceleration, at, while breaking?In the figure, a block of mass m = 5.44 kg is pulled along a horizontal frictionless floor by a cord that exerts a force of magnitude F = 10.6 N at an angle 0 = 24.0°. (a) What is the magnitude of the block's acceleration? (b) The force magnitude F is slowly increased. What is its value just before the block is lifted (completely) off the floor? (c) What is the magnitude of the block's acceleration just before it is lifted (completely) off the floor? (a) Number Units (b) Number Units (c) Number UnitsIn the figure, a crate of mass m = 99 kg is pushed at a constant speed up a frictionless ramp (0 = 30°) by a horizontal force . The positive direction of an x axis is up the ramp, and the positive direction of a y axis is perpendicular to the ramp. (a) What is the magnitude of F? (b) What is the magnitude of the normal force on the crate? (a) Number i (b) Number Units Units II ATTIT This answer has no units °(degrees) m kg
- A crate is sitting on a horizontal surface where the coefficient of static friction is 0.60. A worker pushes horizontally on the crate, which has a mass of 45 kg. The crate does not move, and there are no other forces acting on it. Which of the following statements is true? (a) The force of friction on the crate is mgμs. (b) The force of friction on the crate is mgμk. (c) The force of friction on the crate is greater than the force that the worker exerts on the crate. (d) The force exerted on the worker by the crate is equal in magnitude to the force of friction exerted by the surface on the crate.A worker drags a crate to the right across a factory floor by pulling on a rope tied to the crate. The worker exerts a force of magnitude F = 450 N on the rope, which is inclined at an upward angle 0 = 30.0° to the horizontal, and the floor exerts a horizontal force of magnitude f = 125 N that opposes the motion. Calculate the magnitude of the acceleration of the crate if (a) its mass is 310 kg and (b) its weight is 310 N. Step 1 Create the free-body diagram. Use the checkboxes to select the correct vectors as instructed above. Move the vectors to the correct starting points and orient them in the correct direction as instructed. Key to Force Labels mg mg = Gravitational force f = Frictional force FN = Normal force T = Tension FN T Draw free-body diagram hereA 15.0 kg box is placed on the horizontal surface of a table where the coefficient of kinetic friction between the box and the table is 0.150. This box is connected to a second 2.50 kg box that is hanging off of the table by an inextensible, massless cord that runs over a massless, frictionless pulley. What is (a) the magnitude of the acceleration of the boxes and (b) the magnitude of the tension in the cord? (c) Include a force (or free-body) diagram of the situation.
- A cougar bites a llama of mass m and drags it across some rough horizontal ground. The cougar applies a horizontal force of magnitude F, and the llama is dragged at a constant velocity. The coefficient of kinetic friction is μk. While the cougar applies the force F, the magnitude of the kinetic friction force, fk , on the llama obeys: a)F > µk m g > fk b)F = fk = µk m gc)F = fk < µk m gd)cannot answer, not enough information givene) F > fk = µk m gIn the figure, a crate of mass m = 83 kg is pushed at a constant speed up a frictionless ramp (0 = 32°) by a horizontal force F. The positive direction of an x axis is up the ramp, and the positive direction of a y axis is perpendicular to the ramp. (a) What is the magnitude of F? (b) What is the magnitude of the normal force on the crate? (a) Number (b) Number i Units UnitsA 620 kg car pulling a 495 kg trailer accelerates forward at a rate of 2.20 m/s2. Assume frictional forces on the trailer are negligible. Ignore air drag. (c) What is the force (in N) exerted by the trailer on the car? Magnitude: Direction: (forward or backward)