A 3-kg block slides at constant velocity down a 32° inclined plane. What is the coefficient of friction between the block and the plane? A. 0.31 * 1.60 O 0.31 O 0.62
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- 1. A telephone pole has three cables pulling as shown from above, with F, (260.0î + 510.0ĵ), F2 = -250.0î , and F3 = –700.0ĵ . a. Find the net force on the telephone pole in component form. b. Find the magnitude and direction of this net force. F,The resultant of the concurrent forces has a magnitude of 1000 N passing through points (x₁ = 0, y₁ = 0, z₁ = 0) and (x₂ = 2, y₂ = 3, z₂ = 4). 1. Compute the x- component of the resultant force. a. 371.1 N b. 392.3 N c. 422.6 N d. 245.9 N 2. Compute the y – component of the resultant force. a. 512.9 N b. 557.1 N c. 435.8 N d. 634.7 N 3. Compute the z – component of the resultant force. a. 632.7 N b. 642.8 N c. 742.1 N d. 791.3 NLift on an airplane is F = (P2-P1) A. The total wing area of a certain airplane is 20 square meter. Air, of density 1.2 kg/m3 , is streaming past the upper wing at 50 m/s and the lower wing at 10 m/s. What is the lift on this airplane? %3D of O a 800 N O b. 9,600N Oc 480 N Od. 16,000 N
- If a vector force F = -7i+10 j+6k [kN], what will be the coordinate direction angle with the Z-axis: Select one: O a. y = 80.8 O b. y 36.8239 O c.y= 116.566° O d.y = 63.823°Can you please help me with this problem? Thank you.PROBLEM 15 18. A crate slides down an inclined plane without friction. If it is released from rest and reaches a speed of 6 m/s after sliding a distance of 2.5 m, what is the angle of inclination of the plane with respect to the horizontal? a. 43.22° b. 41.22° c. 45.22° d. 47.22°
- (b) A block weighing 20 kg rest on a rough surface with the coefficient of kinetic friction, p=0.3. A force F=(22+ s²) N, where s is in meter, acts in the direction depicted in Figure Q.4(b) on the block. The spring is originally unstretched and move the block from a position s=s1 and a speed v=vy to a position s=s; and a speed v=v2. Given that at position s/=0 the block is at rest and s2=0.5m. (i) Using the principle of work and energy, calculate speed v2 (ii) Calculate the power generated to move the block to sz IT1. You are tasked with designing the runway on an aircraft carrier. The minimum speed for the F/A18 Hornet is 200 mph. The Hornet weighs 40,000 lbf and its twin engines provide a thrust of ~40,000 lbf combined, providing a max acceleration of 1g.a. How long must the deck be to takeoff unassisted? Give the answer in ft. b. This is most likely longer than your typical ~450 ft carrier. What acceleration must you achieve with both the engines and with a catapult system together to reach the required minimum speed by the end of the deck? c. What net force (combined engines and catapult) must be applied to the plane to get the acceleration in b? d. Do you think the plane will be able to use disk brakes on its tires to stop when landing?Use your knowledge of friction to make your argument. Also know that their coefficient of friction is ~1.A 100 gram wooden block is placed on an inclined ramp and released from rest. The ramp is tilted at an angle of 25 degrees with thek horizontal. The coefficient of static friction between the block and the ramp is 0.300 and the coefficient of kinetic friction is 0.200. 25° 35. The acceleration of the block has a magnitude of c. 2.37 m/2. A. 4.14 m/ В. 2.18 т D. 1.01 m/ E. zero.
- corre hacia acả v constante rueda hacia ac An acrobat who is on the lateral surface of a cylinder, moves his legs and moves the cylinder with constant velocity. The cylinder is on a rough horizontal surface (with friction). If the coefficient of friction between the shoes and the cylinder is mu = 0.21 determine the force of friction %3D between the cylinder and the acrobat A. 128.6 N B. 100 N C. 12.8 N D. 200 N E. 342 N F. ON G. 9.8 N H. None of the above 1. 21 N J. 132 N14. A 25.0 kg girl goes down a slide at an amusement park, reaching the bottom. The slide is 10.0m long and the top end is 3.00m above the ground, bottom is 0.30m above the ground. The coefficient of friction between the girl and the slide is 0.150. What velocity will she exit, at the bottom of the slide. Draw a FBD, explain what you are doing h₁1. A force F=100 N is acting on an object of mass m=10 kg. The force makes an angle of 10° with the x-axis. Calculate the acceleration of the 9.85 m/s 8.69 m/s object. A в 7.52 m/s D 6.34 m/s 2. A 1000 kg object is rising. Its speed is increasing at 3 m/s. The force on the object is: A 1000 N B 3000 N 9800 N D 12800 N 3. A 16 kg object is initially at rest. A constant force of 8.0 N is exerted for 4 s on that object. The change in speed of this object will be 2.0 m/s 6.0 m/s 0.5 m/s 4.0 m/s A B D