6. Mammals that depend on being able to run fast have slender lower legs with flesh and muscle concentrated high, close to the body (Fig. 8–33). On the basis of rotational dynamics, explain why this distribution of mass is advantageous. FIGURE 8–33 Question 6. A gazelle.

6. Mammals that depend on being able to run fast have slender lower legs with flesh and muscle concentrated high, close to the body (Fig. 8–33). On the basis of rotational dynamics, explain why this distribution of mass is advantageous. FIGURE 8–33 Question 6. A gazelle.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

If there is a change of angular momentum from J to 4J in 4s, then the torque is ___________ a) (3/4) J b) 1J c) (5/4) J d) (4/3) J
16-146. A ride in an amusement park consists of a rotating arm AB that has an angular acceleration of aдB = 1 rad/s² QAB when @AB = 2 rad/s at the instant shown. Also at this instant the car mounted at the end of the arm has an angular acceleration of a = {-0.6k) rad/s² and angular velocity of w' (-0.5k) rad/s, measured relative to the arm. Determine the velocity and acceleration of the passenger C at this instant. = w' = 0.5 rad/s 10 ft 60° y WAB = 2 rad/s 30° x Probs. 16-145/146 B 2 ft
References A A 4 States) Aa - A-at-A- R % Mailings Review EEST F 5 -- T 164- Paragraph The angular position of a rotational object is given by 0-(4 rad/3) t3 The diameter of the object is Q Búsqueda 6 View 2.17 meters. Calculate the average angular velocity in radians/seconds between t = 4.57 seconds and T = 5.84 seconds. ♫+ & 7 -B (Ctrl)- 18144 U Tell me what you want to do... * y AaBbCcDc AaBbCcDc AaBbC AaBbCct AaB = 1 Normal T No Spac... Heading 1 Heading 2 Title S 19 D-II 8 - ( ho PPI 9 O O Styles U prt sc 00
Answer detailly 7(iii)
15 - When the angular position of a door at t = 0 is (0) = 20 rad, it begins to rotate at an angular speed of ω (t) = 5 + 2t (rad / s). Find the angular position of the door at time t = 2s.A) 17rad B) 64rad C) 14rad D) 34rad E) 41rad
cm 46.. A torque wrench is used to tighten a nut on a bolt. The wrench is 25 long, and a force of 120 N is applied at the end of the wrench as shown in Figure 9-42. Calculate the torque about the axis that passes through the bolt. Example 9-3 F = 120 N 20% Figure 9-42 Problem 46 25 cm Freedman, College Physics, 3e, 2021 W. H. Freeman and Company
8) The rotational inertia about the center of a figure skater is 2.5 kg-m2 while her arms are outstretched and 1.5 kg-m2 while her arms are folded against her body. If she has an angular velocity of 6 rad/s while her arms are outstretched, what would be her angulan velocity while her arms are folded against her body?
I) A revolving door consists of a four identical panels mounted to a solid column. Each panel has a mass of 15 kg. The solid column has a mass of 20 kg with a radius of 250m. Find the rotational inertia about an axis that runs through the center of the solid column (the dashed line). 910 m 2.20 m Top down view: R = 250 m 910 m
Diving from a high cliff, Cliff begins with a moderate rotational speed of a half rotation per second. Rank the following positions (and their moments of inertia) that cliff can assume during his dive, from the lowest rotational speed he will experience to the highest. + 1. Standing straight up, spinning about a head-to-toe axis: I = 0.3 kg m2 + 2. Bent in half, about an axis through his waist: I = 4 kg m- %3D + 3. Standing straight upwards, about an axis through his waist: I = 16 kg m2 + 4. Mass tucked inwards into a ball: I = 0.8 kg m- + 3. Arms out, spinning about a head-to-toe axis: I = 1.2 kg m2
When a rigid body rotates about a fixed axis, all the points in the body have the same what? Explain
16) Angular acceleration can be produced by: (a) Power (b) Torque (c) Pressure (d) 17) The minute hand of a large clock is 3.0 m long. What is its mean angular speed? (a) 1.4 x 10 rads- (b) 1.7 x 103 rads" (c) 5.2 x 103 rads" 18) In vertical circle, the minimum speed of the body at highest point is (a) v = √2gr (b) v = √3gr (c) √5gr 500 Kgm² 19) Moment of Inertia of 100 Kg sphere having radius 50 cm will be (a) 10 Kgm² (b) 5 Kgm² (c) Temperature (d) 1.0 x 10-1 rads-1 (d) 13 = = √gr (d) 2.5 Kgm² 20) A body rotates with a constant angular velocity of 100 rad/sec about a vertical axis. The torque (a) required to sustain this motion will be Zero Nm (b) 21) Torque acting on body determines its (a) Linear acceleration (b) 22) Force and torque are analogue of force (a) (b) Acceleration (c) Each other 23) An elevator moving upward such that it moves with accelerationa=2g, what will be the real weight of a 100 Nm (c) 200 Nm (d) 300 Nm Impulse (c) Angular Acceleration (d) Linear Momentum…