Two small children are riding on a toboggan. The force of friction between the toboggan and the snow is 77 N. An applied force of 115 N is needed for the toboggan to move forward at a constant speed. Determine the labeled FBD for this situation.
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- A block is being pulled along a horizontal surface by a force of 30 N at an angle of 25 degrees above the horizontal. The surface is sticky and hence a friction force of 10 N opposes the motion. What is the acceleration of the block if the mass of the block is 5 kg? What is the magnitude of the normal force?A sled is pulled at a constant velocity across a horizontal snow surface. If a force of 4.0 x 10^1 N is being applied to the sled rope at an angle of 11 degrees to the ground, what is the magnitude of the force of friction of the snow acting on the sled?A zoologist pulls a block of hay towards an animal enclosure. The zoologist pulls at the angle of 27 degrees above the horizontal with a constant speed of 1 m/s. The mass of the hay is 60 kg and the coefficient of friction between the hay and the concrete is 0.29What is the value of the force F the zoologist is applying? please include a diagram using coordinate system and vectors, implied values, and known values.
- A force of 9.4N pulls horizontally on a 1.3-kg block that slides on a rough, horizontal surface. This block is connected by a horizontal string to a second block of mass m2 = 1.90kg on the same surface. The coefficient of kinetic friction is μk = 0.23 for both blocks.A) What is the acceleration of the blocks?B) What is the tension in the string?A block of mass 52 kg block is being pulled up a 15° slope by a force of 277 N directed parallel to the slope. The block's magnitude of acceleration is 1.25 m/s². What is the coefficient of kinetic friction between the block and the slope? Mk =Cart 1 has a mass of 20.0 kg, cart 2 has a mass of 10.0 kg, and Cart 3 has a mass of 15.0 kg. Coefficient of Kinetic friction is 0.10. A third cord, which pulls on cart 1 and is at an angle of 23° above the horizontal, has a tension of magnitude 150 N.(hint: FN of cart 1 is NOT equal with Fg). Draw FBD for each cart. a) Determine the magnitude of the acceleration of the carts. b) Determine the magnitude of the tension (T2) in the cord between m3 and m2. c) Determine the magnitude of the tension (T1) in the cord between m2 and m1
- A 1250kg small aircraft accelerates along the runway to slow down from +36.6 m/s to +6.60 m/s in 5.10 seconds. Determine the average resistive (friction) force acting upon the plane. (don't forget the correct sign for the direction) (Use correct number of significant figures in answer) Force of friction =A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 140.0 N at an angle of 17.0° above the horizontal. The box has a mass of 25.0 kg, and the coefficient of kinetic friction between box and floor is 0.300. (a) Find the acceleration of the box. m/s² up the incline (b) The student now starts moving the box up a 10.0° incline, keeping her 140.0 N force directed at 17.0° above the line of the incline. If the coefficient of friction is unchanged, what is the new acceleration of the box? m/s² up the inclineWhen a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 965 N and the drag force has a magnitude of 1016 N. The mass of the sky diver is 98.5 kg. Take upward to be the positive direction. What is his acceleration, including sign?
- When you push a 1.80-kg book on a tabletop, it takes 2.25 N to start the book sliding. Once it is sliding, however, it takes 1.50N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between the book and the table top?An applied force of 95.6 N is used to accelerate an object across a frictional surface. The object has aweight of 45.2 N and encounters a frictional force of 60.0 N.(a) Draw a sketch of the object and show all of the forces acting on the object.(b) What is the net force acting on the object in the horizontal direction?(c) What is the net force acting on the object in the vertical direction?(d) Using Newton’s 2nd Law, find the object’s acceleration.