2. Fig. 2 shows a 25.0-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, F, and F2, are applied to the crate, and it begins to move. The coefficient of kinetic friction between the crate and the floor is µr= 0.350. Determine the: (a) magnitude of the acceleration of the crate, (b) direction (relative to the x axis) of the acceleration of the crate.
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- Determine the force Q-> when the block moves with constant velocity. Express your answer in vector form.You are given the job of moving a refrigerator with a mass of 1.8 x 102 kg across a horizontal floor. The coefficient of static friction between the refrigerator and the floor is 0.45. Calculate the magnitude of the minimum force that is required just to set the refrigerator into motion.A box of mass 15.7 kg slides down an inclined plane without friction. If the acceleration, a, of the box along the direction of the plane is 4.1 m/s2, what is the angle θ (in degrees) of the plane with respect to the horizontal?
- An Atwood machine consists of two masses hanging from the ends of a rope that passes over a pulley. Assume that the rope and pulley are massless and that there is no friction in the pulley. If the masses have the values ?1=19.5 kg and ?2=12.5 kg, find the magnitude of their acceleration ? and the tension ? in the rope. Use ?=9.81 m/s2.A mover has to move a heavy sofa of mass 118 kg to the second floor of the house. He uses a rope to pull the sofa up a ramp from the first to the second floor. As he pulls the sofa he makes sure that the rope is parallel to the surface of the ramp which is at 30.0° to the horizontal. If friction between the sofa and the ramp is negligible, and the sofa has an acceleration of 0.700 m/s2, find the tension in the rope (in N). NProblem 2: An applied force of 20 N is used to accelerate an object to the right across a frictional surface. The object encounters 10 N of friction. Use the diagram to determine the normal force, the net force, the coefficient of friction (u) between the object and the surface, the mass, and the acceleration of the object. (Neglect air resistance.) Fnorm Friet =10 N Fapp = 20 N Fgrav=100 N m = a = Fnet=
- A block of mass m₁ = 3.61 kg on a frictionless plane inclined at angle 0 = 34.7° is connected by a cord over a massless, frictionless pulley to a second block of mass m₂ = 2.38 kg hanging vertically (see the figure). (a) What is the acceleration of the hanging block (choose the positive direction down)? (b) What is the tension in the cord? (a) Number i (b) Number i Units Units M₁ \0Two blocks A and B with mA = 0.9 kg and mB = 0.80 kg are connected by a string of negligible mass. They rest on a frictionless horizontal surface. You pull on block A with a horizontal force of 7.8 N. (A) Find the magnitude of the acceleration (in m/s2) of the blocks. (B) Determine the tension (in N) in the string connecting the two blocks.Consider two blocks connected . Block A has mass 2.00 kg, and block B has mass 5.00 kg. The table on which B sits is frictionless, the cord connecting the blocks is light and flexible, and the pulley is light and frictionless. The horizontal force F S has magnitude F = 20.0 N, and block B moves to the left with an acceleration of 1.50 m/s2. What is the tension in the cord that connects the two blocks?
- Mass m, = 13.7 kg is on a horizontal surface. Mass m, = 7.49 kg hangs freely on a rope which is attached to the first mass. The coefficient of static friction between m, and the horizontal surface is µs = 0.618, while the coefficient of kinetic friction is µk = 0.121. m1 m2 If the system is in motion with m, moving to the left, then what will be the magnitude of the system's acceleration? Consider the pulley to be massless and frictionless. Submit Answer Incorrect. Tries 2/10 Previous TriesA force F is applied to a block to move it up a θ = 27° inclined frictionless surface. If F = 72 Newton, and M =4.2 kg, what is the magnitude of the acceleration of the block?Two objects are connected by a massless cable passing over a frictionless pulley. Object A is positioned on a table, while object B hangs freely. The coefficient of kinetic friction between object A and the table is 0.09950. If the mass of object A is 150 kg, and the mass of object B is 238 kg, what is the acceleration of the objects?