4. Determine which of the following systems has the highest magnitude of torque using cross product vector operations. Also, use the right hand rule to find the direction of the torque of each system. Use the symbol 2 for torques whose directions are towards the page and D for torques whose directions come out of the page. F10 cms ww 20 cm F-20m

4. Determine which of the following systems has the highest magnitude of torque using cross product vector operations. Also, use the right hand rule to find the direction of the torque of each system. Use the symbol 2 for torques whose directions are towards the page and D for torques whose directions come out of the page. F10 cms ww 20 cm F-20m

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter42: Heat Gains And Heat Losses In Structures

Section: Chapter Questions

Problem 10RQ: If the R-value of a construction material is 2.0, what isits U-value? A. 0.25 B. 0 50 C. 1.0 D. 2.0

See similar textbooks

Similar questions

1.A rotor has an inner radius of 10.0 cm and an outer radius of 25.0 cm. It is fixed to a frictionless axle that goes through its center. The moment of inertia (I) of the rotor is 0.0235 kg m2. A set of 5 constant forces act on the rotor, as shown in the diagram below. (a) Find the net torque acting on the rotor, in units of Nm. Be sure to give both the magnitude and direction. (b) Find the angular acceleration of the rotor, in units of rad/s2. Give both the magnitude and direction. (c) Assuming it starts from rest at t = 0, how long does it take for the rotor to reach an angular speed of 565 revolutions pre minute (rpm)? Give your answer in seconds. (d) At t = 2.50 seconds, how many complete revolutions will the rotor have made?
1) An electric motor’s torque is a function of the speed at which it rotates. Many brushed AC motors have a linear toque curve as shown below. If the power output of the motor is equal to the torque (T) multiplied by the rotational speed in rad/s (w), what is the maximum power you can get out of the motor if the stall torque (Tstall) is 0.001 Nm and the no load speed (wno load) of 10,500 RPM? Give answer in Watts.
(The complete question is in the picture) The force acting on an object is F = 3.50 [N]ˆi−5.20 [N]ˆj−2.30 [N]kˆ. The vector from the origin to the point where the force is applied is r = 3.50 [m]ˆi + 2.50 [N]ˆj. What is the vector torque with respect to the origin produced by this force?A. 10.9 [N.m]ˆi + 11.5 [N.m]ˆj − 27.0 [N.m]kˆB. −18.2 [N.m]ˆi + 8.75 [N.m]ˆjC. −5.75 [N.m]ˆi + 8.05 [N.m]ˆj − 27.0 [N.m]kˆD. −5.75 [N.m]ˆi − 8.05 [N.m]ˆj + 9.45 [N.m]k
How to solve these two equations, to find IJ (kN) and ID (kN)? x: -IJ*cos37.5º -ID*cos56.9º+(-26.3kN)*cos37.5º)=0 y: IJ*sin37.5º -ID*sin56.9º-10kN-(-26.3kN)*sin37.5º=0
A rotating mechanical system and free body diagrams for this system are given below.The torque vector denoted by number 3 in the free body diagram of J1Which of the following could it be?
An open circular cylinder of 20 cm diameter and 120 cm long contains watr up to a height of 80 cm. It is rotated about its vertical axis at 400 rpm. Find the difference in the total force in N (a) at the bottom of the cylinder. (b) at the sides of the cylinder due to rotation. Possible Answer: a) 14.52 b) 2465.45 c) 1265.17 d) 568.73
Two cylinders rolling in the same direction has speed ratio of 2.5 and center distance of 50 cm. Find the diameter of the larger cylinder. A. 56.34 in B. 263.45 in C. 166.67 in D.
Force F = - 4.4Ni + 6.4Nj acts on a small rock with a position vector r = 3.1mi + 8.5m j relative to the origin. In unit vector notation, what is the resulting torque on the rock about the point ( 2.4,4.7,9.9)m^ prime ?
1) A cylindrical rod of constant shear modulus, G is of length L and located between z=0 and z=L. It has a polar moment of inertia given by J=(Jo)/(1-Z/L) and t=-sin(πZ/2L)where Jo is a constant.The boundary conditions are dΦ(o)/dz =0 AND Φ(L)=0 Find Φ(z) and graph (1/GJo)Φ(Z), and (1/GJo)(dΦ(Z)/dz) ?
Which of the following would Newton's first law alone NOT account for? 1) Passengers on board an elevator undergoing uniform motion can't tell that the elevator is really moving. 2) A passenger leans forward in her seat when the car's brakes are applied. 3) During launch, astronauts feel that they are being pushed back into their seats. 4) No matter how hard you push against it, the boulder would not move. 5) A rocket accelerates upward from a launch pad and the engines' thrust overcomes gravity.
A motor drives four loads, two have rotational motion and two have translational motion. The momentof inertia of the motor is 1.2kg-m^2. The motor runs at a speed of 1000rpm. The table below shows thedetails of the four loads. Calculate the power developed by the motor. (Load ;Type of Motion; Speed; Inertia / Mass; Torque / Force) 1; Rotational; 200 rpm; 7 kg-m^2; 10 N-m 2; Rotational; 200 rpm; 5 kg-m^2; 6 N-m 3; Translational; 10 m/s; 10 kg; 20 N4; Translational; 10 m/s; 20 kg; 30 N
Given the figure, AB=5m, BC=8m and AG=7m and pt 0 is origin. Determine the following: • What is the magnitude of R and Cr in pt G? (Unit must be in N and kN-m) • What is the magnitude of R and Cr in pt 0? (Unit must be in N and kN-m) • Unit Vector of R in the system. • Direct Cosines of Cr in pt 0.