In analyzing the equilibrium of a flat, rigid object, one should first choose an axis about whichtorques can be calculate. Which of the following is true regarding the choice of axis?a) The axis must pass through the objectť's center of mass.b) The axis must pass through one end of the object.c) The axis must be either the x axis or the y axis.d) The axis must pass through a point within the object.e) Any axis within or outside the object can be chosen.

The torque about a point is calculated when the applied force is multiplied by the lever arm or the…

In analyzing the equilibrium of a flat, rigid object, one should first choose an axis about which torques can be calculate. Which of the following is true regarding the choice of axis? a) The axis must pass through the object's center of mass. b) The axis must pass through one end of the object. c) The axis must be either the x axis or the y axis. d) The axis must pass through a point within the object. e) Any axis within or outside the object can be chosen.

In analyzing the equilibrium of a flat, rigid object, one should first choose an axis about which torques can be calculate. Which of the following is true regarding the choice of axis? a) The axis must pass through the object's center of mass. b) The axis must pass through one end of the object. c) The axis must be either the x axis or the y axis. d) The axis must pass through a point within the object. e) Any axis within or outside the object can be chosen.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 37P: To get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against...

See similar textbooks

Similar questions

Consider the U-beam section shown in the figure below. The beam section splits into 3 segments (assuming it to be made of uniform, material and the mass of the vertical segment is double the mass of the horizontal segments). Find the y-coordinate of the center of mass from the bottom of the beam section (in cm). 120 cm 30 cm 180 cm +40 cm T30 cm ---. Origin 120 cm O a. 120.0 Ob. 177.5 12:11 ENG 18/05/2021
a) Three masses are set on a board with negligible mass. The center of mass of m1, m2, and m3 are located 2 m, 5 m, and 8 m from the start of the board. The masses are m1 = 10 kg, m2 = 5 kg, and m3 = 3 kg. Where should the fulcrum (triangle) be placed so that the board is balanced?
A large airplane typically has three sets of wheels: one at the front and two farther back, one on each side under the wings. Consider the Boeing 787 "Dreamliner", with a mass of 198000 kg. In this particular model, the distance from the front wheels to the rear set of wheels is 23.8 m. a) If the center of mass of the airplane is along a line through the center and 3.00 m in front of the rear wheels, how much force, in meganewtons, does the ground exert on each set of rear wheels when the plane is at rest on the runway? b) How much force, in meganewtons, does the ground exert on the front set of wheels?
A beam of negligible mass and a length of 1.00 m balances two masses m₁ 16 kg and m₂ = 8 kg. The distance of m₁ from the fulcrum is 20 cm. Let the distance of m₂ from the fulcrum be d2. Assume all quantities are correct to 3 significant figures. m2 m2g (a) For first condition equilibrium is m₁g-m₂g. N=0. N O N-m₁g-m₂g-0. N+m₁g-m₂g=0. N-m₁g+m₂g=0. mi mig (b) Match the directions of rotations induced by the forces about the fulcrum: A. N no rotation B. mg clockwise C. m₂g counter-clockwise
An architecture student working at a drafting table requires some muscle action in order to support her head. As shown in the figure, three forces act on her head. If the force provided by muscles is FM = 60 Nand the weight of her head is W = 36 N,determine the magnitude and direction of the force provided by the upper vertebrae FV to hold her head stationary. Assume that this force acts along a line through the center of mass of her head as do the weight and muscle force. (Assume the +x-axis to be to the right.) Magnitude = ? Direction (measured clockwise from the −x axis) = ?
A 63kg beam extends horizontially from the side of a wall. A 13kg box hangs from the end of the beam. The beam is also supported by a cable that is connected to the side of the wall, the cable is also attached to the beam 3/4 of the way from the wall to the end of the beam, it makes a 32 degree angle with the beam. The beam does not have uniform mass distribution, the center of mass of the beam is 1/4 of the way from the wall to the end of the beam. The tension on the cable is 709.63N. What are the x and y components of the force the wall exerts on the beam?
A person carries a plank of wood 2.00 m long with one hand pushing it down at one end with a force F1 and the other hand holding it up with a force F2 at a distance of 0.500 m from the same end of the plank. If the plank has mass 20.0 kg and the center of mass of the plank is in the middle of the plank, what are the magnitudes of the forces F1 and F2? a. F1 = 392.4 N, F2 = 196.2 N b. F1 = 392.4 N, F2 = 392.4 N c. F1 = 196.2 N, F2 = 392.4 N d. F1 = 196.2 N, F2 = 196.2 N
A physics student lies on a lightweight plank supported by two scales 2.50m apart to determine the location of his center of mass. The left scale reads 290N and the right scale reads 122N. Determine the student’s mass Determine the distance from the student’s head to his center of mass. Indicate all assumptions you made.
An architecture student working at a drafting table requires some muscle action in order to support her head. As shown in the figure, three forces act on her head. If the force provided by muscles is FM = 70 N and the weight of her head is W = 31 N, determine the magnitude and direction of the force provided by the upper vertebrae Fy to hold her head stationary. Assume that this force acts along a line through the center of mass of her head as do the weight and muscle force. (Assume the +x-axis to be to the right.) magnitude N direction measured clockwise from the -x-axis CG 40 13
A uniform plate of height 0.970 m is cut in the form of a parabolic section. | y IV The lower boundary of the plate is defined by: y =0.600x². Find the distance from the rounded tip of the plate to the center of mass. Submit Answer Tries 0/12
Problem 3: A large airplane typically has three sets of wheels: one at the front and two farther back, one on each side under the wings. Consider the Boeing 787 "Dreamliner", with a mass of 189000 kg. In this particular model, the distance from the front wheels to the rear set of wheels is 21 m. Part (a) If the center of mass of the airplane is along a line through the center and 3.00 m in front of the rear wheels, how much force, in meganewtons, does the ground exert on each set of rear wheels when the plane is at rest on the runway? F, = sin() cos() tan() 8 9 HOME cotan() asin() acos() E 5 6 atan() acotan() sinh() 2 3 cosh() tanh() cotanh() END ODegrees O Radians Vol BACKSPACE DEL CLEAR Submit Feedback I give up! Hint Part (b) How much force, in meganewtons, does the ground exert on the front set of wheels?
Fred Flintstone’s club–ax is made up of two parts: an uniform 4.0 kg stick and a symmetrical 7 kg stone attached to the end of the stick. The dimensions of the club-ax are shown in the figure. How far is the center of mass from the handle end of the club-ax? Express your answer in cm.