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- M Assume no friction M Hanging mass is 8 kg. Mass on table is 9 kg. What is the tension in the string connecting them? Answer to 2 sig figs.The figure shows three blocks attached by cords that loop over frictionless pulleys. Block B lies on a frictionless table; the masses are mA blocks are released, what is the tension in the cord at the right? 6.70 kg, mB 6.20 kg, and mc = 12.0 kg. When the B C Number UnitsTwo masses m1=5 Kg and m2=12 Kg are connected with string and pulled with a force F=25 N that makes an angle of 53° with a smooth horizontal surface as shown in the figure. Find the tension in the string in a unit of Newton. F A. 6.258 B. 8.85 m2 m1 0 C. 2213 D. None E. 4.425
- ol nt... 7 2 W S 6. A mass m₁ = 4.80 kg block on a tabletop is attached by a string to a hanging block of mass m₂ = 3.00 kg, as shown in the figure. The coefficient of kinetic friction between the mass (m₁) and the surface is 0.29. The blocks are released from rest and allowed to move freely. Find the magnitude of the tension in the string. N 3 E 80 F3. 4 288 R F % 5 246 T G 6 16 ceil6 ceil6 ceil6 ceil6 cesto co B 21910291999 MacBook Air FO Y & 7 m₂ H U 8 J FB ( 9 M K 16 ceiló cerlo ceiló cel cc116 ceil6 ccilo ceiló ceilo O 4 16. cci PQuestion 13. A rescue helicopter is lifting a man (weight = 877.22 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 1.36 m/s2? (b) What is the tension during the remainder of the rescue when he is pulled upward at a constant velocity? Ans: 999 N; 877 N moito lir man ties one end of a nylon rope around the freeA 2.78 kg mass is sliding across a horizontal surface while being pushed on by an applied force of 19.3 N i. If the acceleration of the mass is 3.71 m/s? i, what is the magnitude of force of kinetic friction acting on the mass as it slides? Enter a number with 2 decimal places and assume it has proper SI Units and is directed in the -i direction.
- 13 m. Four weights, of masses m1 = 3.00 kg, m2 = 1.00 kg, m3 = 4.00 kg, m4 = 2.00 kg, are hanging from the ceiling as shown. They are connected to each other with ropes. The tension in the rope connecting the masses m1 and m2 is * O 184 N. 98.1 N. 68.7 N. 58.9N.Two blocksmịand m2 connected by a rope are being pulled by a horizontalforce F equal 160 N. Suppose that mį=10 kg,20 kg, and the coefficient of kineticm 2 =20 kg10 kgfriction between each block and the surfacem1is 0.52.A. Draw free-body diagrams of both objects.B. Find the acceleration of the systemC. Find the tension in the ropeD. What is the distance that the system ( two masses) will travel if youknow that are started from rest and final velocity is 4.5 m/sec(B) a= { Fcorre 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 N
- 6. Two blocks, with masses shown are pulled up a ramp by a pull force P. The kinetic friction coefficient between each block and the ramp is µg = 0.40. The blocks start from rėst and speed up the ramp. They reach a speed of 0.85 m/s after 4.00 s. 4.0 kg a) Draw FBDS of both masses. Write down correct NII equations. Find the magnitude of the tension in the string connecting the two blocks. 6.0 kg 30°A block with mass m = 5 kg is pushed with a force of = 30 N. Please answer F1 the following: A. Draw a body diagram ( like I did in lecture) representing all forces acting on the block. B. If the coefficient of static friction is = 0.5, does the block move? ( μscompare with )FsF1 C. The block starts moving, if the coefficient of static friction is =0.2 find .μkFk D. Find the acceleration. E. After t = 2 s how far did the block move? (the initial position and initial Xi velocity are both zero)Vi F. What is the velocity after t = 3 s ?Your friend, who dislikes doing pushups, begins to do a pushup from her knees. You estimate your friend weights about 62.41 kg. Use g=9.8 m/s2. What is the supporting force from EACH of her hands in unit of N?