Show that the specific weight and density are related according to specific weight = (density) (acceleration due to gravity) .
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Show that the specific weight and density are related according to specific weight = (density) (acceleration due to gravity) .
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- The particle of mass m = 3.1 kg is attached to the light rigid rod of length L = 1.50 m, and the assembly rotates about a horizontal axis through O with a constant angular velocity 0= w = 2.1 rad/s. Determine the force T in the rod when 0 = 26°. The force T is positive if in tension, negative if in compression. Part 1 Answers: ar = Calculate the r- and 8-components of acceleration. i L ae = i 0 8 m m m/s² m/s² eTwo blocks are connected by a strut of negligible weight with frictionless pins. The coefficient of friction on all surfaces is 0.20. An amount of force, P, is applied to cause impending motion to the right. Which of the following nearly gives the compression force at the strut? a. 320 lb b. 700 lb c. 400 lb d. 150 lbQuestion 1 A uniform bar of length L, cross-sectional area A, and mass density p is suspended vertically from one end. (a) Show that the elongation of the bar is & = pgl?/(2E) where g is the gravitational acceleration and E is the modulus of elasticity. (b) If the mass of the bar is M, show that 6 = MgL//2EA)
- Consider the T-beam shown in (Figure 1). Suppose that a = 80 mm, b=160 mm, c = 10 mm. Figure < 1 of 1 Determine y, which locates the centroidal axis x' for the cross-sectional area of the T-beam. Express your answer to three significant figures and include the appropriate units. y = Submit Part B IT' = Submit Part C Value Determine the moment of inertia I. Express your answer to three significant figures and include the appropriate units. Request Answer Iy' = Value Request Answer Units Value Units ? Determine the moment of inertia Iy'. Express your answer to three significant figures and include the appropriate units. Units ? ?principle indicates that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces. O Bernoulli's O Archimedes O Pascals OSpongebob'sThe particle of mass m = 3.1 kg is attached to the light rigid rod of length L = 1.50 m, and the assembly rotates about a horizontal axis through O with a constant angular velocity 0= w = 2.1 rad/s. Determine the force T in the rod when 0 = 26°. The force T is positive if in tension, negative if in compression. Part 1 Answers: ar = Calculate the r- and 0-components of acceleration. ae = i i L Ө L 8 0 m m m/s² m/s²
- (Figure 1) Figure 30 mm 140 mm, 30 mm 30 mm 70 mm 30 mm 170 mm 1 of 1 Part A Determine the distance to the centroid C of the beam's cross-sectional area. Express your answer to three significant figures and include the appropriate units. X = Submit Part B Īy = Value μA Submit < Return to Request Answer Compute the moment of inertia Iy about the y' axis. Express your answer to three significant figures and include the appropriate units. Value Request Answer Units ignment Units ? Provide Feedback ?2.5 mm A solid object is hung by using a thin cord from a floating timber as shown in the figure. The timber has a specific gravity of 0.5 with dimensions of 60 x 30 x 10 mm. The solid object has a volume of 6600 mm³. Determine the following: a. The tensile force in the cord b. The buoyant force acting on the solid object c. Mass of the solid object 10 mm M0, 15°CA) Determine the resultant force and its distance from the point A for the four forces shown in figure below when a=30. B) The value of a if the resultant force is applied at point ! 160 lb 100 lb 40ft at A B 25 400 lb 30ft 90 lb 600 D 10 ft 60 ft
- The forces acting on the sailplane are represented by three vectors. The lift L and the drag D are perpendicular. The magnitude of the weight W is 500 lb. The sum of the forces W + L + D = 0. Graphically determine the magnitudes of the lift and drag.An astronaut has a mass of 68 kg. What is the weight of the astronaut on Earth at sea level? What are the mass and the weight of the astronaut on the Moon, and on Mars? What is the ratio of the pressure exerted by the astronauts shoe on Earth to Mars?Determine the resultant of the three forces acting on a ring. Write each force vector in Cartesian notation. For the resultant give the angle, the magnitude, and the Cartesian notation. yA 50 lb *45 30 150 lb 100 lb