A box on a slope is pushed with a horizontal force, FA, as shown below. If the box slides down the slope, which of the following free body diagrams correctly represents the box? FK FG FN FA FK F FA
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- Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 75.0 N, the second exerts a force of 90.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 23.0 kg. (a) What is the system of interest if the acceleration of the child in the wagon is to be calculated? (See the free-body diagram.) (b) Calculate the acceleration. (c) What would the acceleration be if friction were 15.0 N?Problem 7: A crate sits on a rough surface. Using a rope, a man applies a force to the crate as shown in the figure. The force is not enough to move the crate, however, and it remains stationary. If necessary, use Fs for the force of static friction, and Fk as the force of kinetic friction. Please use the interactive area below to draw the Free Body Diagram for the crate. y Add Force O Reset All F e vx Ftotal,x: + (pos) Ftotal,y: + (pos)I am pulling my kids in their wagon on the way to the park. The handle makes an angle of 40° above thehorizontal and I am pulling with a force of 85.0 ? along the handle. My kids and the wagon have acombined mass of 28 ??.a. Draw a free-body diagram, labeling all the forces acting on the wagon and any angles that mayappear in your diagram. Include friction. There should be four forces in your diagram.b. Write out Newton’s second law in the x- and y-directions (∑ ?? = ??? and ∑ ?? = ???).c. What is the normal force exerted on wagon from the ground?d. What is the magnitude of the frictional force if the wagon is moving at a constant velocity?5e. What is the coefficient of kinetic friction between the wagon and the ground?
- Question 22 A block is pulled along a rough level surface at constant speed by the force P. The figure shows the free-body diagram for the block. FN represents the normal force on the block; and f represents the force of kinetic friction. F, N What is the magnitude of FN? A 2mg В mgProblem Two-block system is given below. The mass of block one is m, = 4 kg and the mass of block two is m = 8 kg. A force is applied on m2 to start the motion of block two knowing that block 1 doesn't move. The coefficient of static friction for all surfaces is qiven as 0.4 (Take g-9.8 m/s). Tension force Fapplied a) Choose the correct answer tor the following question How many torces along the x-axis are acting on block I with mass m? How many forces along the y-axis are acting on block I with mans m? How many forces along the x-axis are acting on block 2 with mass m7 How many torces along the y axis are acting on block 2 with mass m? b) Calculate the magnitade of normal force | FNIlexerted by block 2 on block 1 Caleulate the magnitude of the muxinans atatic tnetien force (Falaated berween banck I anst hiloek 2The two blocks are connected by a massless uniform rope. An upward force of 150 N is applied as shown in the figure below. (a) Draw three free-body diagrams: one for the 6.00-kg block, and another one for the 5.00-kg block. For each force, indicate what body exerts that force. b) What is the acceleration of the 5.00-kg block? c) What is the tension at the top of the 5.00-kg block?
- The figure models the action of the upper body. Forces W, and W2 represent the weight of the head and torso of a person, where in this case W, = W, = W. The force, W, acts half way along the upper rod at E and W, acts at the end of the rod at B. The line is attached 3/4 of the way up the rod at D. Where the tension in the line C-D is 2590 N in order to maintain this position, what is the force, W? 10 W, 25° 189 N 145 N O 214 NA sled is on a horizontal surface and a rope with tension T is pulling on it at an angle 0 above the horizontal. The sled had mass M and does not move due to the frictional force. In this case the coefficient of friction is µ̟. In terms of the variables given and g, what is the magnitude of the frictional force in this case? Select one: a. H, Mgsino b. Tcose O c. Tsin0 O d. H, Mgcos0ung on it E have no frictional force acting on it 20. A 5 kg block is pulled along a rough level surface by a pull force P, where P = 300 N. The figure shows the free-body diagram for the block, fk represents the force of kinetic friction. If the coefficient of kinetic friction between the block and the surface, k = 0.3, calculate the magnitude of the block's acceleration? Hint: Obtain two equations from Newton's second law, only one of them directly involve acceleration but you will still need the other equation. FN A) B) D) E) on k03) 25 m/s² 57 m/s² 285 m/s² 315 m/s² none of the above 5kg|| Infin rusrail 22 mg P-MK = m nevytipolov antar ont igau 300N ->) EFx = max = P₂ = max -MK {Fy=may = FN-ong = ma FN-g=a ov P-M₁₂ = m (FN Мк= 300-0.3-5kg (F → P =ma ei ant ell or supe zi joalde jogido na orelor BOR (0 300-0.3 5 1. Two forces act on a 4.5-kg block resting on a frictionless surface as shown. What is the magnitude horizontal acceleration of the block? Hint: There are two forces along…
- 1. The motion of a pendulum is curvilinear. If not for attachment and air resistance, a pendulum would perpetually swing from one (A) side to the next (C) and back. 2. We stand on the ground and say that we are not moving. That is true because we are using the earth as our degrees per day, 3. There are many kinds of forces in nature although there are two basic types: at the pendulum's point of _- Relative to the earth's axis, we are rotating at 360 and _- However, this phrase is a 4. Newton's Laws of Force used to be called laws of misnomer because the laws operate even when an object does not move or objects exerting forces on each other are motionless. 5. "An object remains at 6. The state of being in constant velocity is called 7. "When a certain force is exerted upon an object. it moves with a proportional until an external force is applied to it." 8. Newton's Second Law of Force is also called the Law of 9. Mass and weight are not the same. Weight is essentially force due to…Draw a free body diagram of an object on a ramp and analyze the forces. Explain why the slope of the ramp can be used to determine the coefficient of friction. Use math to expalin your answer.A crate sits on a rough surface. Using a rope, a man applies a force to the crate as shown in the figure. The force is not enough to move the crate, however, and it remains stationary. If necessary, use Fs for the force of static friction, and Fk as the force of kinetic friction. Draw the Free Body Diagram for the crate.