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|| Two crates, A and S, sit at rest side by side on a frictionless horizontal surface. The crates have masses mA and mB. A horizontal force
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- The x and y coordinates of a 4.00-kg particle moving in the xy plane under the influence of a net force F are given by x = t4 6t and y = 4t2 + 1, with x and y in meters and t in seconds. What is the magnitude of the force F at t = 4.00 s?arrow_forwardA block of mass ?=2.80 kg is being pulled by a force ?⃗ of magnitude 12.0 N on a horizontal, smooth (frictionless) surface. The force makes an angle ?=30.0° abovethe horizontal, as shown in the figure. a)Find the magnitude of the normal force exerted by the surface on block. b)Find the acceleration of the box. c)If the box starts from rest, what would be its speed after it travels 2.00 m?arrow_forwardA train is equipped with a 50 Mg engine and three cars which each have a mass of 30 Mg. The train increases its speed taking 80 seconds to reach 40 km/h from rest, find the force T from the engine E to the first car A. E Farrow_forward
- Two blocks of masses M1=3.5 kg and M2=5.7 kg are at rest on a horizontal surface with a coefficient of friction uk = 0.12. You start them moving by pushing on block 1 with a force F1H = 33 N at an angel of theta = 42 degrees below the horizontal. Draw free body diagrams for M1 and M2 and label each force and what type of force it is, if known, which object causes the force and which object feels the force. Choose and label a coordinate system for your free body diagrams and apply N2L to the free body diagrams you have drawn in each direction. Determine the magnitude of the kinetic friction force on each block.arrow_forwardBlock B has mass 5.00 kg and sits at rest on a horizontal,frictionless surface. Block A has mass 2.00 kg and sits at rest on topof block B. The coefficient of static friction between the two blocksis 0.400. A horizontal force P is then applied to block A. What is thelargest value P can have and the blocks move together with equalaccelerations?arrow_forwardorder to get an object moving X a physics Flashcards | Quizlet Computation. P Two blocks on a horizontal, frictionless surface are in contact with one another, pushed by a horizontal force of magnitude P as shown below with m₁ = 3 kg, m₂ = 3 kg, and P = 9 N. Find the magnitude of the contact force F21 that block 2 exerts on block 1. + m2 mi 4 Record your numerical answer below, assuming three significant figures.arrow_forward
- Consider a setup with a horizontal table, 2 masses, a string, and a massless frictionless pulley. Assume on the table m1= 1.8kg and hanging m2= 1.2kg. Also assume the coefficent of friction, uk = 0.20 on the table. a) For each mass, identify the forces, draw a free body diagram, and set up equations for Newton's second law. You can also write an equation of the system. b) Find the accleration after release.arrow_forwardA2.60 kg block is initially at rest on a horizontal surface. A horizontal force Fof magnitude 6.69 N and a vertical force Pare then applied to the block (see the figure). The coefficients of friction for the block and surface are u, - 0.4 and - 0.25. Determine the magnitude of the frictional force acting on the block if the magnitude of P is (a)8.00N and (b)12.0 N. (The upward pull is insufficient to move the block vertically.) (a) Number Units (b) Number Unitsarrow_forwardTwo crates, A and B, sit at rest side by side on a frictionless horizontal surface. The crates have masses mA and mB. A horizontal force F is applied to crate A and the two crates move off to the right. Draw the free-body diagram for crates A and B.arrow_forward
- Suppose the mass of a fully loaded module in which astronauts take off from the Moon is 1.00 × 104 kg. The thrust of its engines is 3.00 × 104 N. (a) Calculate the module’s magnitude of acceleration in a vertical takeoff from the Moon. (b) Could it lift off from Earth? If not, why not? If it could, calculate the magnitude of its acceleration.arrow_forwardA 20 kg suitcase is being pulled with constant speed by a handle that is at an angle of 23 may want to review (Pages 142-145). above the horizontal. You Part A If the normal force exerted on the suitcase is 180 N, what is the force F applied to the handle?arrow_forwardA block m, rests on a surface. A second block m₂ sits on top of the first block. A horizontal force F applied to the bottom block pulls both blocks at constant velocity. Here m₁ = m₂ = m. m₂ my necessary.) (a) What is the normal force exerted by the surface on the bottom block? (Use the following as necessary: m and g as N₁ = (b) What is the normal force exerted by the bottom block on m₂? (Use the following as necessary: m and g as necessary.) N₂ = (c) How would your answers to parts (a) and (b) change if m₁ = 7m and m₂ ON₁ = 3.5mg, N₂ = 3.5mg ON₁ = 8mg, N₂ = mg ON₁ = 8mg, N₂ = 7mg ON₁ = 6mg, N₂ = 5.25mg (d) How would your answers to parts (a) and (b) change if m₁ = m and m₂ = 7m? H mg ON₁ = 8mg, N₂ ON₁ = 6mg, N₂ = 5.25mg ON₁ = 8mg, N₂ = 7mg ON₁ = = 3.5mg, N₂ 3.5mg, N₂ = 3.5mg 16 :9: esc F1 Q 2 F2 W #3 APR 28 00 20 F3 E 6000 $ 4 F4 R 45 % F5 T 16 ali MacBook Air F6 6 Y & 7 JA F7 D 8 DIIarrow_forward
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning