1. (20 Marks) An object has an L-shape and can be treated as 2 beams fixed...
The gravitational force exerted on a solid object is 5.10 N. When the object is suspended from a spring scale and submerged in water, the scale reads 2.50 N (figure). Find the density of the object. Figure (a) shows a vertical spring scale. The top of the scale has a hook attached to the ceiling. The bottom of the scale has a hook attached to a rope. The rope hangs down and is attached to a solid block that hangs...
#2 1. A block of wood has a mass of 25 kg and a density of 650 kg/m'. You are holding it under water by pushing downward. a) What is the volume of the block of wood? b) What is the buoyant force on it? c) What is the magnitude of the downward force you are exerting to hold the block under water? 2. In the diagram, the hinge is frictionless and the system is in equilibrium. The uniform beam...
#4 please A uniform sheet of metal in the shape of a hemisphere of radius 1 m is used as a sign. The hemisphere has a mass of 200 kg and is suspended by two vertical wires attached to points along its horizontal diameter. One wire is attached to the left end of the diameter and the other is attached to a point three-quarters of the way to the other end. What is the tension in each wire? A ladder...
Video Example EXAMPLE 1 A dam has the shape of a trapezoid shown in the top figure. The height is 20 m and the width is 40 m at the top and 20 m at the bottom. Find the force on the dam due to hydrostatic pressure if the water level is 6 m from the top of the dam. 40 m SOLUTION We choose a vertical x-axis with origin at the surface of the water and directed downward as...
A 10200-N shark is supported by a rope attached to a 3.40-m rod that can pivot at the base. A rod is attached to a pivot at the base of a wall on the left. The rod extends up and right at a 60.0° angle from the horizontal. A cable connected to the top end of the rod extends up and left at a 20.0° angle from the horizontal before connecting to the wall. A shark hangs from a rope at the top...
Question 2 (25 marks) A square wood platform of side-length L = 2.4 m rests on masonry walls. The deck of the platform is constructed of 4 cm thick planks supported on two beams which are 2.4 m long. The beams have a width of 100 mm and height of 150 mm and are supported at their ends by the walls. The structure is designed to support a uniformly distributed load, wA (kN/m2), acting over the entire top surface of...
A cube has sides of length L 0.350 m. It is placed with one corner at the origin as shown in the figure (Figure 1). The electric field is not uniform but is given by E -5.13 N/(C m) i+(204 N/(C m) )zk. Part A Find the electric flux through each of the six cube faces S1, S2, S3, S4, S5, and Se Enter your answers in ascending order separated by commas ? (N/C) m2 Фе Previous Answers Request Answer...
1. The 100 kg weight on hydraulic lift (area = 0.6 m²) shown in figure. At points A, B C and D calculate the pressure. (Ywater=9810 N/m?) Hinge 2. a) Determine the resultant force acting on the inclined circular gate. b) Find the location of center of pressure. c) Calculate the minimum weight of the block that can open the gate. (Assume that gate is weightless) (a=80 cm, water 9810 N/m) 3. The length of submerged gate AB is 5...
Question 10 An object has 12 J of kinetic energy, 7 J of gravitational potential energy, and 16 J of elastic potential energy. What is the total mechanical energy? 35 J 23 J 28 J 19 J Question 12 A cube-shaped object with a mass of 19.3 kg measures an equal length of 0.1 meters on each side. What is the approximate density of the cube? 8000 kg/m3 11000 kg/m3 14000 kg/m3 19000 kg/m3 Question 13 A force of 16...
Both parts please Problem 22.34 A cube has sides of length L 30.310 m. It is placed with one corner at the origin as shown in the figure (Figure 1). The electric field is not uniform but is given by E (-4.31 N/(C. m) )zi (2.71 N/OC.m) )zk. Figure 1 of 1 S2 (top) (back) Se S3 (right side) (left side) S4 (bottom) S5 (front) Part A Find the electric flux through each of the six cube faces S1,S2,S3,S4,S5, and...