A 250 gram block on a 30 deg inclined plane is attached by an inextensible string going over a frictionless pulley to a 500 gram hanging weight. The static and kinetic friction coefficients are .25 and .123. What is the acceleration of the blocks in cm/s2 563.7 O 376 O 292.4 O 192.4 455.2
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- A 250.0 N box is placed on a horizontal surface and a force of 150 N is applied at anangle of 30.0o from the horizontal. As a result, the box slides along the surface with anacceleration of 05.00 m/s2What is the coefficient of friction between the box and the surface?The cable supporting a 2165 kg elevator has a maximum strength of 24070 N . What maximum upward acceleration can it give the elevator without breaking (in m/s2) ?Two blocks are connected by a string passing over a pulley. if the coefficient of kinetic friction between block 1 and the ramp is uk is 0.160 and m1=3kg what mass m2 would allow blcok 1 to slide down the ramp at constant velocoty? first determine the direction of friction force on block 1
- At 560 metric tons, the Airbus A-380 is the world’s largest commercialairliner. What’s the upward force on an A-380 when the plane is (a) flying at constant altitudeand (b) accelerating upward at 1.1 m/s2?A 100kg block slides on the floor with an initial speed of 6.4 m/s. Ifthe coefficient of kinetic friction between the block and the floor is 0.46,what is the player’s acceleration? How far did he slide?The block has mass m = 10.6 kg, the ramp is at an angle of θ = 24 degrees, the coefficient of kinetic friction between the block and the ramp is μk = 0.25, and the applied force is F = 150.2 N. What is the acceleration of the block up the ramp, in m/s2?
- A 1800 kg car traveling at a speed of 13 m/s skids to a halt on wet concrete where μk = 0.30. How long are the skid marks?What force, applied parallel to the plane, is necessary so that a 100 lb object will slide down the frictionless plane with an acceleration of8 ft/s2, if the plane makes an angle of 30 ̊with the horizontal?You are pulling a string with a force of 205N attatched to a heavy box of 38kg across your carpeted floor. The coeffiecnt of kinetic friction between the objects and your floor is 0.32. The string attatched to the object makes and angle of 35 degrees with respect to the horizontial ground. With what acceleration is the box attatched to the string. A.) 3.09m/s b.) 1.37m/s c.) 2.27 m/s d.) 4.42 m/s E. 6.71 m/s
- A woman exerts a horizontal force of 119 N on a box with a mass of 39.2 kg. If the box doesn't move, what's the magnitude of the static friction force (in N)? What is the minimum possible value of the coefficient of static friction between the box and the floor? (Assume the box remains stationary.)A 52.0 N block rests on an inclined plane at an angle of 25.0 (N of E) . If the block is pushed with 10 N of force down the ramp and u = 0.556 , what's the block's initial acceleration?A 3.69x103 kg train is moving at a constant speed of 10m/s on a horizontal railroad track that offers an overall frictional force of 500N. Calculate (a) it's acceleration, (b) the engine force, (c) the distance traveled in 20 seconds, (d) its acceleration if it changes its speed to 30 m/s, (e) the engine force in this case?