A 1.30-kg object slides to the right on a surface having a coefficient of kinetic friction 0.250 (Figure a). The object has a speed of v; = 3.40 m/s when it makes contact with a light spring (Figure b) that has a force constant of 50.0 N/m. The object comes to rest after thespring has been compressed a distance d (Figure c). The object is then forced toward the left by the spring (Figure d) and continues to move in that direction beyond the spring's unstretched position. Finally, the object comes to rest a distance D to the left of theunstretched spring (Figure e).mCv= 0V= 0(a) Find the distance of compression d.0.548This would be the correct answer if there were no force of friction. m(b) Find the speed v at the unstretched position when the object is moving to the left (Figure d).3.4The friction force acts to the left as the object moves to the right and to the right as the object moves to the left, always taking mechanical energy out of the system. m/s(c) Find the distance D where the object comes to rest.2.36You appear to have correctly calculated the distance using your incorrect result from part (b). mNeed Help?Watch It

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A 1.30-kg object slides to the right on a surface having a coefficient of kinetic friction 0.250 (Figure a). The object has a speed of v, = 3.40 m/s when it makes contact with a light spring (Figure b) that has a force constant of 50.0 N/m. The object comes to rest after the spring has been compressed a distance d (Figure c). The object is then forced toward the left by the spring (Figure d) and continues to move in that direction beyond the spring's unstretched position. Finally, the object comes to rest a distance D to the left of the unstretched spring (Figure e). v=0 (a) Find the distance of compression d. 0.548 This would be the correct answer if there were no force of friction. m (b) Find the speed v at the unstretched position when the object is moving to the left (Figure d). 3.4 1x The friction force acts to the left as the object moves to the right and to the right as the object moves to the left, always taking mechanical energy out of the system. m/s (c) Find the distance D where the object comes to rest. 2.36 You appear to have correctly calculated the distance using your incorrect result from part (b). m

A 1.30-kg object slides to the right on a surface having a coefficient of kinetic friction 0.250 (Figure a). The object has a speed of v, = 3.40 m/s when it makes contact with a light spring (Figure b) that has a force constant of 50.0 N/m. The object comes to rest after the spring has been compressed a distance d (Figure c). The object is then forced toward the left by the spring (Figure d) and continues to move in that direction beyond the spring's unstretched position. Finally, the object comes to rest a distance D to the left of the unstretched spring (Figure e). v=0 (a) Find the distance of compression d. 0.548 This would be the correct answer if there were no force of friction. m (b) Find the speed v at the unstretched position when the object is moving to the left (Figure d). 3.4 1x The friction force acts to the left as the object moves to the right and to the right as the object moves to the left, always taking mechanical energy out of the system. m/s (c) Find the distance D where the object comes to rest. 2.36 You appear to have correctly calculated the distance using your incorrect result from part (b). m

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

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A 1.20-kg object slides to the right on a surface having a coefficient of kinetic friction 0.250 (Figure a). The object has a speed of v; = 2.60 m/s when it makes contact with a light spring (Figure b) that has a force constant of 50.0 N/m. The object comes to rest after the spring has been compressed a distance d (Figure c). The object is then forced toward the left by the spring (Figure d) and continues to move in that direction beyond the spring's unstretched position. Finally, the object comes to rest a distance D to the left of the unstretched spring (Figure e). a b C v= 0 e (a) Find the distance of compression d. (b) Find the speed v at the unstretched position when the object is moving to the left (Figure d). m/s (c) Find the distance D where the object comes to rest.
According to the figure where a mass M = z/100 kg on the frictionless floor is being pushed by horizontal m force F. A mass m = 3.00 kg is placed on top of M F M and the coefficient of static and kinetic friction between the surfaces are 0.500 and 0.300, respectively. Find the maximum value of F (in Newton) which allows mass m to move with mass M without slipping. (Use g = 9.80 m/s2)
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 Hk = 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/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 it at a 45° angle. Hk is still Hk = 0.2. What magnitude force Fpush should you apply to cause the box to slide down 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 a frictionless pulley (also of negligible mass). The arrangement is known as Atwood's machine. One block has 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…
Q3. In the position shown in Figure, the system is in the rest. Cylinder B is considered solid and moves in frictionless bearings. The spring is originally unstretched and has a modulus of 10000 N/m. Assuming that the coefficient of friction is 0.25, what will be the speed V of block A after dropping 20 cm. k=10000 N/m mc= 40 kg A=0.25 20 cm mB= 40 ka לדלק RB= 20 cm mA= 100 kg
Q1. m-1 kg m,=4 kg The mechanism set up with m,, m, and weightless pulleys is as shown in the figure. Then, the masses are released. Static and kinetic friction between the inclined plane and m, are 0.6 and 0.5 respectively. What are the accelerations of m, and m,? (g = 10 m / s². Frictions and mass of the pulley are ignored.) Q2. 300 m/s .*........ yatay 100 m/s 320 m x=? A plane is flying horizontally at an altitude of 320 m with 300 m/s speed. It launches its bomb with 100 m/s speed relative to the plane as shown. How many meters away from the castle should the plane launch its bomb to hit the castle. (g=10 m/s², sin370=0.6; cos37°=0.8) Q3. 2 kg The object in the frictionless cone in the figure is making a uniform circular motion. Calculate, a) the normal force that the cone exerts on the object, b) centripetal force applied to the body, c) Find the speed of the object.
(c) (i) Briefly define power and efficiency? (ii) Calculate the power of force F exerted on the 15 kg block shown in Figure Q.4(c) if the block is travelling at a constant velocity v = 6 m/s with a displacement of s = 0.8 m. The coefficient of kinetic friction µg = 0.6 and the spring is originally stretched at 0.1 m. F k = 2 kN/m- A 45° Figure Q.4(c)
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.
5) A 50-kg mass on a spring is moved so that it extends the spring 50 mm from its unextended position. If the coefficient of friction between the mass and the sup- porting surface 0.3, what is the velocity of the mass as it returns to the undeformed configuration of the spring? 50 kg K=10 N/mm =.3 6) For the mass-spring system in Question 5, how far will the spring be compressed when the mass stops instantaneously before starting to the left?
Question 2 Consider the two blocks shown above, connected together by a massless rope around a massless, frictionless pulley. The mass of the top block is m₁ = 7.00 kg and the mass of the bottom block is m₂ = 14.8 kg, and all surfaces have a coefficient of kinetic friction = 0.350. If the bottom block is pulled to the left with a force of T=197 N, what is the acceleration of the bottom block?
A crate of 68 kg simply stands on the moving cart with constant acceleration a. The height from the center of gravity to the cart, L, is 1.5 m, and the angle 0= 13°. What is the maximum acceleration a (in m/s²) the cart can have without tipping over on the cart? The coefficient of static friction between the crate and the cart is ls = 0.49. Please pay attention: the numbers may change since they are randomized. Your answer must include 3 places after the decimal point. Take g = 9.81 m/s2. 0.5 m |0.5 m G a Your Answer: Answer
1. A block of mass m slides down on the surface of a wedge of mass M (see figure below). If there are no frictions between the block and the wedge, and between the wedge and the table, find the acceleration of the wedge, the normal force between the block and the wedge, and the acceleration of m relative to the wedge. Discuss your results in the limit of m<
Figure 2 В A Block A is hanging from a massless string which runs over a massless and frictionless pulley and connects to Block B. Block B slides over an inclined plane with ordinary kinetic friction. The plane under block B is inclined at an angle theta = 0 away from vertical. The other side of Block B is connected to another massless string which runs over another massless and frictionless pulley to connect to Cart C. Cart C rolls without friction over a plane which is inclined at an angle of phi = y away from vertical. C