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Section 4.6 Free-Body Diagrams
4.25 Crates A and B sit at rest side by side on a frictionless horizontal surface. They have masses mA and mB, respectively. When a horizontal force
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- Question 7: Find the maximum force F making angle B with the normal of the inclined plane to keep the block of mass m on the inclined plane of inclination angle 0 at rest as shown in Figure 3. The coefficient of static friction force between the block and the inclined plane is µ. The inclined plane does not move. m Figure 3arrow_forwarddler?action=activityBranding&COURSEID=3377&SECTIONID=170728 1 2 1 2 art 1 art 2 $ X R F V 1. Two blocks are connected by a massless rope as shown below. The mass of the block on the table is m, and the hanging mass is m₂. The table and the pulley are frictionless. O 15 % 5 T 2 7 Subpart 1: Draw FBDs In your notebook, draw free body diagrams for m, and m₂ using the template as shown below. The forces acting on the system are weights of the blocks, m₁g, and m₂g, the tension in the string T and the normal reaction N₁ of the table on m₁. ^ B 10 6 Y G H & M- 7 hp U fa J m₁ * 00 8 N M 1 IAA ( 9 K < fo O ► 11 0 O L m₂ f11 3 P ; 22 112 Rain.... ^ 40) @ { + [ ? = 12 ☆ 1 insert ( } ← ] S 4:45 PM 9/27/2022 prt sc backspace pause Earrow_forwardTwo blocks connected by a light horizontal rope sit at rest on a horizontal, frictionless surface. Block A has mass 15.0 [kg], and block B has mass m. A constant horizontal force F = [60.0 N] is applied to block A. In the first 5.00 [s] after the force is applied, block A moves 18.0 [m] to the right. d. Write Newton’s 2nd law for block A along the horizontal direction and solve for the force exerted by the rope on block A. e. Write Newton’s 2nd law for block B along the horizontal direction and solve for its unknown mass m. (Hint: F on rope A = F on rope B)arrow_forward
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- During a time interval of one second, a ball moves in the +x or -x direction (that is, to the right or the left), and a net force acts on the ball in the +x or -x direction. For each motion listed below, check all the descriptions of net force that could produce that behavior. More than one description may be valid for a particular motion.arrow_forwardBlock A is on top of block B connected by a light, flexible cord passing around a fixed, frictionless pulley. All other surfaces have friction. (a.) Draw the FBD of Block A. Label action-reaction pairs with only one label. (b.) Draw the FBD of Block B. Label action-reaction pairs with only one label. (c.) Block A weighs 1.90 N, and Block B weighs 4.20 N. The coefficient of kinetic friction between all surfaces is 0.30. Find the magnitude of the horizontal force F necessary to drag block B to the left at constant speed if A and B are connected by a light, flexible cord passing around a fixed, frictionless pulley.arrow_forwardThree blocks A, B, and C stand next to each other as shown in the figure. A force F with magnitude 140.5 N is applied to push block C directly and sends the blocks accelerating to the right. Let's assume there is no friction between the blocks and the ground. The mass of A, B, and C are 7.7, 58.7, and 99.7 kg, respectively. What is the force applied on block B by block C F (in unit of N)? B Aarrow_forward
- An athlete is training his stamina by pulling a load of 125 kg box at 846 N through a rough surface by a rope at 35.9° above horizontal as shown in Figure 4. Given that the coefficient of kinetic friction between the load and the surface, uk = 0.546 (a) Draw a complete free body diagram of the box(b) Compute the frictional force between the load and the surface(c) Determine the acceleration of the load(d) Without adding additional load, propose a slight modification to the above setting to increase the toughness of the training. Justify your proposal.arrow_forwardA block of mass m is on an inclined ramp. The ramp makes anangle θ with respect to the horizontal, as shown. The ramp hasfriction, with coefficient of kinetic friction μk and static friction μs.This experiment takes place on earth.The block has an initial speed of v up the ramp. It travels adistance d along the ramp before it stops.Answer using variables, please.a) Draw a free body diagram clearly showing all the forces acting on the block while it is movingup the ramp.b) Calculate the work done by the Normal force as the block travels the distance d.Is it positive, negative, or zero?c) Calculate the work done by the Weight force as the block travels the distance d.Is it positive, negative, or zero?d) Calculate the work done by the Friction force as the block travels the distance d.Is it positive, negative, or zero?e) If the block comes to rest, how far has it travelled?Use the work-energy principle and your results of parts b), c), and d).f) Briefly (one sentence) explain why this…arrow_forwardWhich of the following is incorrect regarding Newton's Third Law of Motion? O A force acting on a body is always the results of its interaction with another body. Whenever two bodies interact, the two forces that they exert on each other are always equal in magnitude and direction. Forces always comes in pairs, that is for every action, there an equal but opposite reaction. The force exerted by a on bis equal to (-)force exerted by b on aarrow_forward
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