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* Kate joins Jim, Luis, and Adrienne in the rope-pulling exercise described in the previous two problems. This time, they tie four ropes to a ring. The three friends each pull on one rope, exerting the following forces:
so that the ring remains in equilibrium, (a) Construct a force diagram for the ring, (b) Use the first condition of equilibrium to write two equations that can be used to determine
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Chapter 8 Solutions
COLLEGE PHYSICS:VOL.1
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- Starting from rest, a rectangular toy block with mass 300 g slides in 1.30 s all the way across a table 1.20 m in length that Zak has tilted at an angle of 42.0 to the horizontal. a. What is the magnitude of the acceleration of the toy block? b. What is the coefficient of kinetic friction between the block and the table? c. What are the magnitude and direction of the friction force acting on the block? d. What is the speed of the block when it is at the end of the table, having slid a distance of 1.20 m?arrow_forwardA crate pushed along the floor with velocity ν→i slides a distance d after the pushing force is removed.a. If the mass of the crate is doubled but the initial velocity is not changed, what distance does the crate slide before stopping? Explain.b. If the initial velocity of the crate is doubled to 2ν→i but the mass is not changed, what distance does the crate slide before stopping? Explain.arrow_forwardSent Mall Daniella messaged 8 Timer for Google F X + с ☐ Apps M Gmail ►YouTube Maps 2 h 12 min zFVLOdcF What must be the direction of the fourth force of the system below to make the magnitude zero? B (80.0 N) A (100.0 N) 30.0° X 53.0° C (40.0 N) O75.5 deg south of west 15.5 deg east of south 15.5 deg south of east 75.5 east of south The string supporting 6 kg block is cut. Find the magnitude of the net torque of form-timer.com/app 30.0° 0 :arrow_forward
- Part A An object moves in a circular path at a constant speed. What is the relationship between the directions of the object's velocity and acceleration vectors? The velocity vector points toward the center of the circular path. The acceleration is zero. The velocity and acceleration vectors are perpendicular. The velocity and acceleration vectors point in opposite directions. The velocity and acceleration vectors point in the same direction. The velocity vector points in a direction tangent to the circular path. The acceleration is zero. Submit Request Answerarrow_forwardProblems: 210, 211, 216, 218, 231, 233, 238, 242, 257, 264 I. In the figure below, the x-component of the force P is 140 lb to the left. Determine P and its y- component. P 7 ww Yarrow_forwardThe following information pertains to questions 1, 2, and 3. A workman pulls a sled across an asphalt road using a rope at angle 0 above the horizontal direction. The workman pulls with 1,000[N] of force. The coefficients of friction of the sled with the road are u=1.00 and µ=0.70. The sled has mass m. The sled is initially at rest. T710Q0[N]. 1) Which expression gives the magnitude of fmax for the situation illustrated above? A) mg B) mg – 1000cos(0) C) - mg + 1000cos(0) D) mg-1000sin(0) E) mg+ 1000sin(0) F) None of the abovearrow_forward
- Two blocks are connected by a string as in the figure and the system is released from rest. The coefficient of kinetic friction between Block A and the table is 0.3. Ignore the air resistance and friction between the pulley and the string. Find the tension in the rope. 12 kg Pulley m, = 12 kg 0. 82.3 N O 117.6 N 76.44 N 58.8 Narrow_forwardPRINTER VERSION 1 BACK NEXT Chapter 11, Problem 022 Your answer is partially correct. Try again. A particle moves through an xyz coordinate system while a force acts on the particle. When the particle has the position vector = (2.00 m) i - (3.00 m) j + (2.00 m) k, the force is F = F, i + (7.00 N) j - (6.00 N) k, and the corresponding torque about the origin is 7 = (4.00 N-m) i + (10.0 N-m)j + (11.0 N-m) k. Determine F Number Units the tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work Question Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWER marrow_forwardPRINTER VERSION 4 ВАСК NEXT Chapter 11, Problem 026 Your answer is partially correct. Try again. At the instant of the figure, a 3.00 kg particle P has a position vector r of magnitude 4.10 m and angle 0, = 41.0° and a velocity vector v of magnitude 7.60 m/s and angle e, = 30.0°. Force F, of magnitude 2.10 N and angle 03 = 30.0° acts on P. All three vectors lie in the xy plane. About the origin, what are the magnitude of (a) the angular momentum of the particle and (b) the torque acting on the particle? (a) Number Units kg-m^2/sv (b) Number UnitsTN-m Click if you would like to Show Work for this question: Open Show Workarrow_forward
- A desperate hiker has to think fast to help his friend who has fallen below him. Quickly, he ties a rope to a rock of mass ma and makes his way over the ledge (see the figure). If the coefficient of maximum static friction between the rock and the ground is µ, and the mass of the hiker is mâ, what is the maximum mass of the friend, mc, that the rock can hold so the hikers can then make their way up over the ledge? Assume the rope is parallel to the ground and the point where the rope passes over the ledge is frictionless. mc = Juarrow_forwardThe slope of the 7.9 kN force F is specified as shown in the figure. Express F as a vector in terms of the unit vectors i and j. Assume a = 11, b = 5. Answer: F = (i a b -x i+ MI j) kNarrow_forward788 N 53⁰ y 32° 411 N 31° 985 N x 2. Workmen are trying to free an SUV stuck in the mud. To extricate the vehicle, they use three horizontal ropes, producing the force vectors shown in the Figure on the left. a. Find the x- and y-components of each of the three pulls. b. Use the components to find the magnitude and direction of the resultant of the three pulls.arrow_forward
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
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