2.0 kgpush45°Problem 4: (a) The 2 kg wood box in the Figure above on the left slides up a vertical wood wall whileyou push on it at a 45° angle. The coefficient of kinetic friction for wood on wood is Hk = 0.2. Whatmagnitude force Fpush should you apply to cause the box to slide up at a constant speed? Recall thatconstant speed means a = 0 m/sec?. Answer: 34.6 N.(b) Let's re-do part (a), but with the box now sliding down the vertical wood wall while you push on itat a 45° angle. Hk is still Hk = 0.2. What magnitude force Fpush should you apply to cause the box to slidedown at a constant speed? Recall that constant speed means a = 0 m/sec?. Answer: 23.1 N.Problem 5: The Figure shows two blocks connected by a cord (of negligible mass) that passes over africtionless pulley (also of negligible mass). The arrangement is known as Atwood's machine. One blockhas mass mi = 1.3 kg; the other has mass m2 = 2.8 kg. What are: (a) The magnitude of the blocks'acceleration. Answer: 3.6 m/sec?. (b) The tension in the cord? Answer: 17.4 N.Problem 6: A box with mass m = 10 kg moves on a ramp that is inclined at an angle of 0 = 55° abovethe horizontal. The coefficient of kinetic friction between the box and the ramp surface is 4 = 0.3.(a) Calculate the magnitude of the acceleration of the box if you push it down the ramp with a constantforce F = 120 N that is parallel to the ramp surface, as shown in the left in the figure below.Answer: 18.3 m/sec?.(b) Calculate the magnitude of the acceleration of the box if you push it up the ramp with a constant forceF = 120 N that is parallel to the ramp surface, as shown in the right in the figure below.Answer: 2.3 m/sec?.FmmF

Since you have asked multiple questions in a single request, we would be answering only the first…

2.0 kg push 45° Problem 4: (a) The 2 kg wood box in the Figure above on the left slides up a vertical wood wall while you push on it at a 45° angle. The coefficient of kinetic friction for wood on wood is = 0.2. What magnitude force Fpush should you apply to cause the box to slide up at a constant speed? Recall that constant speed means a = 0 m/sec2. Answer: 34.6 N.

2.0 kg push 45° Problem 4: (a) The 2 kg wood box in the Figure above on the left slides up a vertical wood wall while you push on it at a 45° angle. The coefficient of kinetic friction for wood on wood is = 0.2. What magnitude force Fpush should you apply to cause the box to slide up at a constant speed? Recall that constant speed means a = 0 m/sec2. Answer: 34.6 N.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Two, unattached boxes are accelerated by a force, F, as in the figure below. The coefficient of static friction between the boxes is 0.9 and the coefficient of kinetic friction between the boxes is 0.5. What's the minimum force, F, required such that the smaller box does not slip down the bigger box? Mass M = 9.8 kg and mass m = 2.7 kg. Assume that there is no friction between the ground and the boxes.
A block weighing 2.50 kg begins its motion from a stationary position at point A, located at the highest point of a frictionless ramp. The ramp is inclined at an angle of 40° relative to the horizontal and has a length of 1.50 m. As the block slides down the ramp, it reaches a region between point B and point C, which is a rough horizontal surface with a kinetic friction coefficient of 0.30. After covering a distance of 1.00 m on the horizontal surface, the block encounters a lightweight spring with a spring constant of 900 N/m. A. Find the total energy for point A and point B? B. Find the speed of the block at point B? C. What is the cumulative work performed on the block as it moves along the rough horizontal surface? D. By employing the work-energy theorem, determine the velocity of the block at point C just before it collides with the spring?
A 1.21 kilogram block is released from rest on a 13.33° frictionless incline. The object proceeds down the incline to the horizontal surface where it slides 4.34 m before it stops. The height of the incline is 3.53 m. what is the coefficient of kinetic friction on the horizontal surface?
To climb a 400 meter high mountain, you have two options, a straight line route with a 40 ° slope or a route composed of 5 equal sections (same length) each with a 20 ° slope. If traveling in a car with a mass of 1280 kg and a maximum power of 88 kW, Determine (assume the whole car as a particle): a) Is the friction enough to prevent the car from sliding? The coefficient of static friction of the tires with the ground is 0.95. b) What is the power required to climb the 40 ° slope at a constant speed of 40 km / h? Does the car have enough power to go up at that speed? c) What is the constant speed at which the 40 ° slope can be climbed with a 60 kW power? d) What is the power required to climb a 20 ° slope at 40 km/h? Does the car has enough power to go up at that speed? e) In which of the two trajectories does the car do more work? Ignore the resistance of the air and rolling resistance and radius of curves between sections of the compound route. Please add the free body diagram.
The figure depicts two pucks on a frictionless table. Puck 2 is four times as massive as puck 1. Starting from rest, the pucks are pushed by two equal forces. 1-Which pucks will have the grater kinetic energy upon reaching the finish line? 2- Which puck will reach the finish time first ?
consider the mass and pulley system in the attached file. mass m1 = 29 kg and mass m2 = 12kg. the angle of the inclined plane is given and the coefficient of kinetic friction between mass m2 and the inclined plane is uk = 0.12. assume the pulleys are massless and frictionless if the system is released from rest, what is the speed of mass m2 after 2.5 s? v(2.5 s) = ?
Blocks A, B, and C are placed as in Fig. and connected by ropes of negligible mass. Both A and B weigh 25.0 N each, and the coefficient of kinetic friction between each block and the surface is 0.35. Block C descends with constant velocity. (a) Draw separate free-body diagrams showing the forces acting on A and on B. (b) Find the tension in the rope connecting blocks A and B. (c) What is the weight of block C? (d) If the rope connecting A and B were cut, what would be the acceleration of C?
In a 300-rough incline, a 1.25 kg block is initially at rest beside a spring that is compressed by 24 cm as shown in the figure below. The spring has a spring constant of 180 N/m and the coefficient of sliding friction between the incline and the block is 0.23. When the spring is released, (a) how far up the incline (with respect to its initial position) will the block slide before sliding back? (b) What is the speed of the block at the instant it is 0.34 m from its initial position?
A SMALL 0.65 BOX IS LAUNCHED FROM REST BY A HORIZONTAL SPRING .THE BLOCK SLIDES ON A TRACKDOWN A HILLAND COMES TO REST AT A DISTANCE d FROM THE BASE OF THE HILL .KINEIC FRICTION BETWEEN THE BOX AND THE TRACK IS NEGLIGIBLE ON THE HILL,BUT THE COEFFICIENT OF KINETIC FRICTION BETWEEN THE BOX AND THE HORIZONTAL PARTS OF TRACK IS 0.35.THE SPRING HAS A SPRING 34.5N AND IS COMPRESSED 30cm WITH THE BOX ATTACHED.THE BOX REMAINS ON THE TRACK AT ALL TIMES. (a)xcalculate the speed of the box before it starts descending down the hill
A block of mass m= 2.0 kg is released from rest on an inclined plane at a height of h = 1.5 m. It moves down the rough incline with slope theta= 30.0°and continues on the horizontal frictionless surface. As shown in the figure, there is a spring with negligible mass and force constant k = 300 N/m. The coefficient of kinetic friction between the block and the incline is 0.250 What is the speed of the block when it gets down on the horizontal surface before it touches the spring? The box continues to move on the horizontal surface and compresses the spring. What will be the maximum compression of the spring?
WORK ENERGY AND POWER COMPLETE SOLUTION A 2kg block hits the spring with a speed of 4 m/s. Determine the total distance traveled by the block before it comes to stop if the spring constant is 8 N/m, and the coefficient of static and kinetic friction is 0.50 and 0.45, respectively.
consider the mass and pulley system in the attached file. mass m1 = 29 kg and mass m2 = 12kg. the angle of the inclined plane is given and the coefficient of kinetic friction between mass m2 and the inclined plane is uk = 0.12. assume the pulleys are massless and frictionless when mass m2 moves a distance 4.94 m up the ramp, how far downward does mass m1 move? d= ?