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Vector Mechanics for Engineers: Dynamics
- Dynamics of Rigid Bodies problem:arrow_forwardQuestion 3: Kinematics The position vector of a particle is given as function of time as r = (3t³î - 4t²ĵ+ 5tk) m. If the particle started moving from rest at = (3î+ 4ĵ- 5k) m and that t is in second, determine the: (a) (b) (c) displacement vector and its magnitude after time t = 3 s vecocity vector and its magnitude after time t = 3 s acceleration vector and its magnitude after time t = 3 s Retarrow_forwardThe planar two-link space-station assembly robot shown in Figure 1 consists of two identical links of lengths a = b=2 metres. (c) Derive expressions for the horizontal and vertical positions and velocities of point E in terms of 0,, 0,, 0, and Ô, . (i) (ii) For the case when 0, = 0.4 radians and 0, = 0.2 radians, and 0, = 0, = 0.6 radians/sec, calculate the position of point E, and the magnitude of the linear velocity of point E. E y b Xarrow_forward
- A car P travels along a straight road with a constant speed v = 64 mi/hr. At the instant when the angle 0 = 60°, determine the values of r in ft/sec and 8 in deg/sec. Assume = 113! Answers: r = 1 0 = F MI x חומון V ft/sec deg/secarrow_forwardPearson's MyLab & MasteringMasteringEngineering Mastering x+ C https://session.masteringengineering.com/myct/itemView?offset- next&lassignmentProblemiD-8341780 Homework 4 Problem 13.112 Part A The pilot of an airplane executes a vertical loop which in part follows the path of a four-leaved rose,r (-600 cos 20 ft, where θ is in radians. His speed at A is a constant up-80 ft/s He weighs 135 lb. Hint To determine the time derivatives necessary to compute the acceleration components ar and ae take the first and second time derivatives of r -600 cos 20) Determine the magnitude of the vertical reaction the seat of the plane exerts on the pilot when the plane is at A Express your answer to three significant figures and include the appropriate units. Then,for turther infomalion use +(re) to determine θ. Also, take the time derivative of-yW + (ref noting that tp:0, to determined (Figure 1) NValue Units Submit Request Answer K Return to Assignment Provide Feedback Figure 1 of 1 r-600 cos 26arrow_forward1. please provide handwritten solutionarrow_forward
- Question 13 of 20 A cart is driven by a large propeller or fan, which can accelerate or decelerate the cart. The cart starts out at the position x = 0 m, with an initial velocity of +5.3 m/s and a constant acceleration due to the fan. The direction to the right is positive. The cart reaches a maximum position of x = +17.5 m, where it begins to travel in the negative direction. Find the acceleration of the cart. Units UNITS CHOICES: no units, s, m, m/s, m/s^2 13arrow_forwardA flywheel rotates with a constant retardation due to braking. From t = 0 to t = 10 seconds,it made 400 revolutions. At time t = 8 sec, its angular velocity was 45 π rad/sec. Determine (i)value of constant ratardation ; (ii) total time taken to come to rest and (iii) total revolutions madetill it comes to restarrow_forwardThe equations of motion of the airplane for straight-line climb, without roll angle, are: ○ V md. =T-D dt L-W=0 О V md- = T- W siny - D dt L - V md. W cos y = 0 =TW siny - D dt mvd = L _ W cos Y dtarrow_forward
- Please give me the correct answer, please. Thank you. This is my last attempt.arrow_forwardProblem (2): A The acceleration of point A is defined by the relation a = -1.8 sin(kx), where a and x are expressed in m/s² and meters, respectively, and k = 3 rad/m. Knowing that x = 0 and v = 0.6 m/s when t = 0, determine the following: (a) The symbolic equation of the velocity. (b) Position of point A when v = 0. C В Darrow_forwardapplied mechanics 2arrow_forward
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