Use images A-E below to choose free-body diagrams for the following physical situations at the instant in time for which they are described. Fnomm Fnomm Fnom Ffrict Fnom Ffrict Ffrict Fapp Fapp grav grav е. Fgrav b. Fgrav grav d. с. a. A car is skidding to a stop (with wheels locked) while traveling to the right across a level roadway surface. a
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- The 7 lb particle is subjected to the action of its weight and forces F1 {2i + 6j 2tk} lb, F2 = {t°i – 4tj – 1k} lb. and F3 = {-2ti} lb. where tis in seconds. F3 Part A Determine the distance the ball is from the origin 2 s after being released from rest. Express your answer to three significant figures and include the appropriate units. Hint 1. How to analyze spatial movement In order to analyze movement of the ball, consider its movement along each axis independently from others. You can do so, because each force component does not depend on others, only on time t. Set up and solve equations of motion along each axis. Do not forget weight acting in the negative z direction. Hint 2. How to detemine distance from the origin at 2s From equations of motion along each axis you can express components of the ball's acceleration as functions of time t. Using them and the fact that the ball starts from rest, you can express velocity components as functions of t. Finally, because the ball…Please Asapplease only answer part d
- I would like to know how to set up a free body diagram for this problem and know what formula I can use to find an expression for part be1 A double incline is setup with two ramps as shown. The left block has a mass m1, and the right block has a mass m2. The left ramp is rough with kinetic friction coefficient uy and an angle 01. The ramp on the right is frictionless with an angle 02. The pulley is massless and frictionless. Assume the system starts accelerating to the right on initial release. a) In the Space below draw a set of free body diagrams (or a single one if taking that method which is fine) to fully describe all forces in this problem. b) Find an equation for the acceleration of the system.The motion of jumping insects is of interest not only to biologists, but also to those who design robots. (Figure 1) shows the speed-versus-time graph for two different takeoff jumps of a 19-mg green leafhopper, as determined from high-speed videos. Part A What is the magnitude of the average net force acting on the leafhopper's body during jump 1? Express your answer to two significant figures and include the appropriate units. F = Value Units Submit Request Answer Part B What is the ratio of the force found in part A to the leafhopper's weight? Express your answer to two significant figures and include the appropriate units. ? F mg Figure Submit Request Answer • Part C 0.8 Is the average force during jump 2 greater than, less than, or equal to the average force during jump 1? 0.6 O greater than 0.4 less than O equal to 0.2 - Jump 1 - Jump 2 Submit Request Answer 6. Time (ms) Speed (m/s)
- Consider a person serving a platter of hot food to their family who is gathered around a table. When holding theplatter, the person can choose how to hold the platter in front of them and would like compare the differences between position 1 and position 2 as shown below. In position 1, the shoulder is at 0 degrees while the elbow is at 90 degrees and in position 2, the arm is flexed as shown. a.) Consider the elbow joint and draw free body diagrams for each of the positions shown, including gravitational forces (consider the weight of the combined forearm and hand), elbow flexor forces, and the joint contact force. b.) Use the information provided below to solve for the magnitude of the elbow flexor force (in Newtons) for positions 1 and 2, the magnitude of the joint contact force (in Newtons), and the angle that the joint contact force makes with respect to the horizontal axis. • The platter of food weighs 7 lbs; the person weighs 175 lbs, and the person is 5’8” tall. • θ = 130…A 5.0 kg object has a set of three forces acting on it, as shown in the diagram. At t = 0, the object is located at the origin and is at rest. a) Use Newton’s second law to find the acceleration of the object. Give both the magnitude and the direction (relative to the +x axis). b) What is the velocity of the object at t = 7.50 seconds? Give both the magnitude and the direction (relative to the +x axis). c) How far is the object from the origin at t = 7.50 seconds?Learning Goal: A box of mass 3.0 kg slides down a rough vertical wall. The gravitational force on the box is 29.4 N. When the box reaches a speed of 2.5 m/s, you start pushing on one edge of the box at a 45° angle (use degrees in your calculations throughout this problem) with a constant force of magnitude F₂ = 23.0 N, as shown in (Figure 1). There is now a frictional force between the box and the wall of magnitude 13.0 N. How fast is the box sliding 2.4 s after you started pushing on it? Figure 45° F₂ 1 of 1
- Newton's first law states that: Group of answer choices Ia. n the absence of any net force acting on it, a mechanical system is necessarily at rest. b. In the absence of a non-zero net force acting on it, a mechanical system keeps moving in the same direction at the same speed (including the case v=0). c. For any pair A/B of objects interacting with one another, the force of A acting on B is the equal-opposite of the force of B acting on A. d. The rate of change of the velocity of a system is proportional to the net force acting on it.A 4.0 × 10¹ kg spaceship is at rest in deep space. Its thrusters provide a force of 1200 kN. The spaceship fires its thrusters for 20 s, then coasts for 17 km. Part A How long does it take the spaceship to coast this distance? Express your answer with the appropriate units. IE To Two blocks, labeled D and E, are connected by an essentially massless string that runs over an essentially massless and frictionless pulley, as shown in Figure 2, above. Block E hangs straight down and is initially moving downward with a speed of 3.82 meters per second. Block D is on an inclined plane, inclined at an angle of theta = 0 = 28.6 degrees above horizontal. There is no friction between block D and most of the plane, but there is friction (with a coefficient of kinetic friction equal to 0.49) between block D and a region of length L = 0.628 meters. Block D will slide over that region (and pass it completely) before it gets to the end of the plane. Block D has a mass of 0.74 kg, while block E has a mass of 0.98 kg. The only significant forces acting on the blocks are friction acting on block D (while in contact with the region with friction), normal forces, tension forces, and gravity (with g = 9.81 m/s2). Calculate the speed of block D (in units of meters per second)…