An Atwood's machine (see the figure below) consists of two masses: one of mass 3.13 kg and the other of mass 8.36 kg. When released from rest, what is the acceleration of the system? (Enter the magnitude in m/s².) HINT m/s²
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- A.) Using the alternate form of Newton's second law, compute the force (in N) needed to accelerate a 1,170 kg car from 0 to 30 m/s in 20 s. The change in momentum is the car's momentum when traveling 30 m/s minus its momentum when going 0 m/s. (Enter the magnitude.) ________ N B.) A runner with a mass of 78 kg accelerates from 0 to 8 m/s in 4 s. Find the net force on the runner using the alternate form of Newton's second law.________ NThis is an F=ma questions. Remember that force and acceleration are vectors. (That's what the boldface font means.) 1) A 14kg object accelerates at (2,4) m/s2. Calculate the magnitude of the force on the object, in Newtons. 2) Calculate the mass if F = (200, 300) N and a = (0.9, 0.3) m/s2. Enter 0 if there exists no answer.Zach, whose mass is 70 kg, is in an elevator going down at 6.0 m/s. The elevator takes 2.0 s to brake to a stop at the bottom floor. What is his apparent weight, in Newtons? Use g = 10.0 m/s². Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
- A box is acted on by two forces. A 39 N Force pushes due east, while in 8.9 N Force pushes due west. If the box accelerates at 4.4 m/s squared, what is its mass? Answer and kilogramsThree objects A, B, and C are moving as shown in the figure below (Figure 1). Assume that A = 11.0 m/s, vB = 9.2 m/s, and vc = 4.0 m/s. Figure 5.0 kg B60° Vc. HA 6.0 kg 10.0 kg 1 of 1 > Find the x-component of the net momentum of the particles if we define the system to consist of A and C. Express your answer in kilogram meters per second. [ΠΙ ΑΣΦ ? Px = kg. m/s Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part B Find the y-component of the net momentum of the particles if we define the system to consist of A and C. Express your answer in kilogram meters per second. OF [Π ΑΣΦ kg. m/s Request Answer Part C Find the x-component of the net momentum of the particles if we define the system to consist of B and C. Express your answer in kilogram meters per second. IVE ΑΣΦ ? kg. m/s Py = Submit Px =m¡m2 F = G d² 3. Effect of Varying Mass 2 Set Mass 1 to be 10 kg, the location of Mass 1 to be 0 meters, and the location of Mass 2 to be 5 meters. Complete the following table. As an example, the third column, "Ratio of force" is computed using the formula: Ratio of force = (Force when Mass 2 is 10 kg)/(Force when Mass 2 is 20 kg) %3D when Mass 2 is 20 kg. Mass 2 Force Ratio of force 01- 10 kg 1.0 10 20 kg 40 kg 100 kg 1.07x10-9 2,67x10 What do you notice about the "Ratio of forces" when the mass of Mass 2 les Die rafio SE he Doubles? e the dds2D00les Dire rafio Sahat at Triples? - O0 mema Increases by four times? What do expect the "Ratio of forces" to be when the Mass 2 is increased by 50 times?
- A 10.0 g bullet is stopped in a block of wood (m = 8.3 kg). The speed of the bullet-plus-wood combination immediately after the collision is 0.8 m/s. What was the original speed of the bullet? Express your answer in m/s, to at least one digit after the decimal point. plz help and use g =9.8Two blocks connected by a cord passing over a small, frictionless pulley rest on frictionless planes (Refer to figure). Assume positive acceleration to the right. (a) which way will the system move when the blocks are released from rest? Right or left? left (b) What is the acceleration of the blocks in meters per second? Do not include the units. Blank 2 (c) What is the tension in the cord in newtons? Do not include the units. Blank 3What is TA if the masses of the objects are m1=25 kg and m2=18 kg?
- (Type only the letter of the correct answer) A Ferris wheel has a diameter of 90 m. It makes one revolution every 60 seconds. a. Find the speed of the passengers when the Ferris wheel is rotating at this rate. Choices: a.) 3.04 m/s b.) 6.12 m/s c.) 4.71 m/s d.) 5.08 m/s Ans.: b. A passenger weighs 882 N at the weight- guessing booth on the ground. What is his apparent weight (normal force) at the highest point on the Ferris wheel? Choices: a.) 838 N b.) 926 N c.) 862 N d.) 983 N Ans.:force Plt) acting on the Piston Causes Crankshaft AB to rotate . The mass per uunit length of each. Bar is 5, and the mass of Piston cúoh in the horizonal plane.. Derive the eauatione The System lies governing the geneialized Coordinate o. 4L んThe spool has a mass of 60 kg and a radius of gyration ko = 0.280 m. (Figure 1) Figure Part A VA = If the 16-kg block A is released from rest, determine the velocity of the block when it descends 0.6 m. Express your answer to three significant figures and include the appropriate units. μÅ Value A Units 0.3 m 0.2 m op Submit Previous Answers Request Answer ? 1 of 1