lab report 8

Subject: Dynamics of rigid bodies Topic: Relative motion Box final answer Auto like

F y A → X CC BY UBC Engineering Your team is prototyping a simple braking system for your model car. The 2.2 kg wheel with a radius of rad r = 0.25 m is rotating at w = 5 A servo motor can apply a variable force F, which in its first two seconds of operation is equal to F N. If the coefficient of kinetic friction between the braking arm and the wheel is uk 10t N and afterwards is equivalent to a constant force of F = 20 0.25, determine the time needed for the wheel to come to a full stop. The point of contact P between the wheel and the - 0.2 i + 0.24 j m from point A. The force of the servo motor is applied at arm is a distance r P A exactly half of the horizontal distance to A from the point of contact. Assume the wheel can be treated as a disk and that the braking arm is massless. B

Topic: Dynamics (Work, Energy, Power) Determine:  (a) Magnitude and Direction. (pls refer from the problem attached) *Please answer with complete and in order solution. * Three decimal places all final answers. *Draw figures and free body diagram with proper labels. *Enclose all final answers with a box.   THANK YOU

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Dynamics of a falling (pinned) sign L A uniform sign is nailed into a wall at its top two corners. The nail on the upper-right corner breaks, and the sign begins to rotate about the remaining nail in the upper-left corner. The mass of the sign is 198 kg, L = 5.2 m, H = 8.6 m, and the moment of inertia of the sign about the upper-left corner is 6666 kg - m?. Opts Opts Opts What is the magnitude of the total acceleration of the center of mass of the sign just after the nail breaks?

A particular bicycle has wheels that are 66 cm in diameter. The radius of the crank armis 18 cm. At its lowest point, the pedal is 16 cm above the ground. A person is pedalingthe bicycle such that the crank arm rotates once every second.Questions:1. Write an equation that models the vertical position of the foot with respect to theground, starting from the lowest point, as the crank arm turns.2. What is the rate of change of the vertical position of the foot when it is at themidline? Explain your answer3. How fast, in kilometres per hour, is the bicycle moving?4. Determine an equation that would model the foot’s position when the cyclist istraveling 5 km/h. Compare this equation to your equation from question 1 andexplain any differences.5. Use calculus to explain why the rotation velocity of a point on the perimeter of awheel is the same as the velocity of the pedal. Use examples to support youranswer.

Subject:mec

Subject: Dynamics of Rigid Bodies Topic: Polar Coordinates BOX FINAL ANSWER AUTO LIKE Note: The answer should be in 3 decimal Places

Needs Complete typed solution with 100 % accuracy.

1. Fig. 1 Shows an aerofoil cutting mechanism which has a laser cutting device located at point E - the path traced out by this point corresponds to the required aerofoil shape. The laser device can be considered as a point mass of 20kg at E. The other links can be assumed massless and you can ignore forces due to gravity in your analysis. The crank CD is driven at a constant angular velocity, wo, If = 10 rad/s show that in the position shown the x and y components of acceleration at point E are respectively: fex = 178.4 m/s² (to the right); fey = 30.6 m/s² (upwards): (a) (i) Hence, determine the force acting on link EBC at B due to link AB (FB) (ii) Show by means of clearance diagrams the direction of the forces at B and A (b) (c) (d) Determine the X and Y components of the force acting on link EBC at C due to the crank (Fcx, Fcy) Determine the torque, T, input or output due to the acceleration of the laser device at this instant. Determine the resultant force acting on the bearing at…

Can you solve this in 30 mins? Specify your answer if others.

A В X Figure 3 Refer to Figure 3. A slender rod of mass 1.5 kg and length L = 1 m is pivoted at one end as shown. It is released from rest in a horizontal position and swings freely. At the instant it is released the angular acceleration (alpha) is 14.715 rad/s^2. In the question that follows, select the answer that is closest to the true value. What is the force reaction at the pivot in the y-direction at the instant the rod is released (when it is still horizontal) in units of N ? Answers: A) 3.68 B) 4.91 C) 6.13 D) 7.36 --- O A O B O D

Problem 4.8 for reference, i only need bottom half

A. The mechanism shown is used to feed cartons to a labeling machine. The drive shaft rotates clockwise. The ram weights 1.5 lb and the coefficient of friction between the ram and the machine is 0.2. Gravitational acceleration: g = 386 in/s². The weight of all other links is negligible. The linear ram acceleration is 5378 in/s² (horizontal direction, sense: to the left). 1. Draw the kinematic diagram. 2. For the instant shown, determine the torque required from the drive shaft to operate the ram. 3" -40° Connecting rod Ram

FTA FTB Two blocks are connected by a light string passing over a pulley of radius 0.18 m and moment of inertia I. The blocks move (towards the right) with an acceleration of 1.4 m/s² along their frictionless inclines (see). mA = 8.0 kg 32° Copyright © 2008 Pearson Education, Inc. a 61% mB = 10.0 kg

Pages Le EXtract Object View Edit OCR Sign Comment Page Organization Convert Protect Start ASSIGNMENT FINAL 20... Q7) A horizontal table rotates freely in a horizontal plane about a frictionless vertical axle. The table has a moment of ineria 200 kg.m² and a radius R = 2.0 m. A student whose mass is m = rim of the disk toward its center. If the angular speed of the system is 2.0 rad/s when the student is at the rim, what is the angular speed when he reaches a point r = 60 kg walks slowly from the M 0.50 m from the center? 11 1 7/7 We HA 144a. Hem t A A L

Subject: Dynamics of Rigid Bodies

B 400 mm 350 350 m A A slender steel rod ABweighs 2.8 kg and is secured to the rotating shaft by the rod OG and its fittings at O and G (as shown in the figure). The angle B remains constant at 30°, and the entire rigid assembly rotates about the z-axis at the steady rate N = 600 rev/ min.

QUESTION 1 A rear-wheel-drive 3150-lb drag race car has a 230-inch wheelbase and a center of gravity 32 inches above the pavement. If this race car is run on a level paved surface with a coefficient of adhesion of 1.0, how far back from the front axle would the center of gravity have to be to develop a maximum acceleration (of 1.0 g=> 32.2 ft/s2) from rest? State your answer in inch, in a form 00.00. (Assume ym = 1.00.)

A disk of radius 50 cm rotates about an axis passing through its center and perpendicular to its plane. The angular position of a point on the disk is given by 0 = 2.0 + 4.0t² + 2.0t³, where 0 is in radians and t is in seconds. What is the magnitude of the total linear acceleration of a point on the disk that is 40 cm from the center at time t = 0.25 s? %3D

Hello, please solve this problem and explain a little bit so i can review. Thank you so much

16. A 150-ft-diameter Ferris wheel completes one revolution in 45 seconds. (a) How far does a chair on the Ferris wheel travel in one revolution? (b) What is the linear speed of the chair in ft/s? (c) What is the angular Speed of the chair in rad/s? SECTION 3.1 RATE IN MECHANICAL SYSTEMS 137

(2) lahai Q1-e) Kinetics: is used to predict the motion caused by given forces or to determine the forces required to produce given motion True False

Problem Calculate the magnitude of the gravity acceleration on the surface of the moon, ignore the gravity effect of the earth, the moon has a mean radius of 1855 km and a mass of 8.36 X 10 kg. 22 Problem How far from the earth must a body be along a line toward the sun so that the gravitational pull of the sun balances that of the earth? Earth - to - sun distance is 10.42 X 10 8 km; mass of the sun is 3.28 X 10 times mass of the earth. 10 Ans. 5.75 X 5 km

A sphere, when released revolved about an axis, whose distance from the center of gravity of the sphere is 100 meters. The angular velocity of the sphere is 9 radians per second. If the acceleration is constant, what is the angular displacement of the sphere in degrees at 10 seconds?

Question 17: A non-uniform rod of length l has linear mass density = Xox where Ao is a positive constant. The rod is pivoted at point P as shown in Figure 10. The rod is released at rest (9 is the gravitational acceleration). Find the speed of the bottom of the rod when it becomes in the vertical position. P M,l || Figure 10 Select one: 2gl 3 gl 2. 3 |2gl 3 | 2gl 2 3 gl 3 ニニ

block C mass = 99 kg block D mass = 66kg horizontal force (H) = 555N and is applied at block D. Angle = 32.779 degrees   note: Ignore friction. Computations must follow D'Alembert's Principle or else the solution is null and void. And answers should be in Newtons or KiloNewtons   1.) Calculate the Normal Force of Contact between blocks D and C. 2.) Determine the Block D Acceleration 3.) Determine the Block C Acceleration

Hi, I have an engineering dynamics question.