F = 20 N %3D T. 0= 30° %3D M 5 kg Hk =0.1 A 5 kg box is being pulled rightward across a rough surface with a rope as shown a Draw a Free-Body Diagram and use it to calculate: a) b) the normal force on the box the horizontal acceleration of the box as it slides to the right
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- Two blocks are connected by a massless, stretchless string. One of the blocks is on a horizontal frictionlesssurface. The string goes over a massless, frictionless pulley. The second mass simply hangs from the string. Between thefirst block and the pulley the string is parallel to the horizontal surface.a) Draw the free-body diagram for the first block (the one on the surface).b) Draw the free-body diagram for the second block (the hanging mass).c) Setup Newton’s second law for the first block.d) Setup Newton’s second law for the second block.e) Symbolically, what is the magnitude of m1’s acceleration?f) Symbolically, what is the magnitude of the tension in the string?Answer the following questions using the equation you derived in part (e) above.g) What is the magnitude of m1’s acceleration if m1 is 5.00 kg and m2 is 1.00 kg?h) What is the magnitude of m1’s acceleration if m1 is 1.00 kg and m2 is 5.00 kg?i) What is the magnitude of m1’s acceleration if m1 is 3.00 kg and m2 is 3.00…At the local grocery store, you push a 14.0-kg shopping cart. You stop for a moment to add a bag of dog food to your cart. With a force of 13.0 N you now accelerate the cart from rest through a distance of 2.20 m in 2.60 s. 19 BE MAR 8 Part A What was the mass of the dog food? Express your answer using two significant figures. G| ΑΣΦ m = Submit rovide Feedback Request Answer MacBook Pro Search or type URL tv A ? kg Course HomeWhen traveling on an airplane you get meals on a serving tray that has large coefficients of static and kinetic friction between the tray and dishes on it. Assume the airplane is moving from left to right. Assume also that the tray is parallel to the velocity of the airplane. d. Draw a force diagram for a cup on a serving tray as seen by a stationary observer on Earth if the airplane is on a runway and speeding up; the cup is at rest on the tray.
- A freight train consists of an engine and several identical cars on a straight, level track. Which of the following statements are true? A. If the train is moving at constant speed, the engine must be pulling with a force greater than the train's weight. B. If the train is moving at constant speed, the engine's pull on the first car must exceed that car's backward pull on the engine. C. If the train is moving at constant speed, the engine's pull must be equal to the force of friction. D. If the train is coasting, its inertia makes it slow down and eventually stopFinish the solution of the problem. Find the tension T in the rope.A 0.35 kg block is being pulled across a flat, level surface by a horizontal string. When the tension in the string is 1.8 N, the block’s acceleration is 0.75 m/s2 in the same direction as the tension. What is the coefficient of kinetic friction between the block and the surface? For your physical representation, draw a free body diagram of the forces acting on the block
- If the hanging mass was equal to the mass of the glider, approximately what value do you expect for the acceleration of the system? Explain.S Q Search 5.14 m/s Alternative formats 12. A 2.00 kg object is initially at rest on a horizontal surface. An applied force of 30.0 N directed at -20° with respect to the x-direction acts on the object. The force of kinetic friction acts on the object once it is set into motion. a. What is the normal force acting on the mass? b. If the coefficient of kinetic friction is 0.250, what is the net force acting on the mass? c. What acceleration is produced in the case of part "b"? d. If the acceleration is actually 7.00 m/s2 i, what must the coefficient of kinetic friction be assuming that everything else remains the same? Answers: (a) 29.9 Nj (b) 20.7 Ni (c) 10.4 m/s2 i (d) 0.475 13. A 3.00 kg mass is pushed up an incline of 50° by a 35.0 N applied force directed up the incline. The coefficient of kinetic friction Hetween the surfaces 24 a mhp OPart A A 23-kg chandelier hangs from a celling on a vertical 4.0-m-long wire. What horizontal force would be necessary to displace its position 0.15 m to one side? Express your answer to two significant figures and include the approprlate on b F = Value Units Submit Request Answer Part B What will be the tension in the wire? Express your answer to two significant figures and include the appropriate units. Fr Value Units Submit Request Answer