co mulov ali to 120m7025 13-16. A wooden ball of mass m and volume V is...
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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...
A rubber ball filled with air has a diameter of 24.3 cm and a mass of 0.454 kg. What force is required to hold the ball in equilibrium immediately below the surface of water in a swimming pool? (Assume that the volume of the ball does not change indicate the direction with the sign of your answer) m is applied to it? What is the magnitude of the angular acceleration of a 25.0-kg disk of radius 0.800 m when a...
1. Two metal beams are joined together by four rivets, Each rivet has a radius of 5.0*10^-3m and is to be exposed to a shearing stress of no more than 5.0*10^8. What is the maximum tension that can be applied to each beam, assuming that each rivet carries 1/4 the total load? 2. a 0.50 kg ball is attached to one end of an aluminum wire that has a diameter of 1.6mm and an unstretched length of 0.80 m. The...
Exercise 11 A squarish object is suspended from the end of a long, uniform bar tilted at an angle 0 above the horizontal. The bar's lower end is anchored to a wall, and the upper end is attached to a horizontal cable anchored to the same wall. All parts of this system are in equilibrium. cable wall object (a) Create a complete FBD for the bar. The FBD should not show the hanging object, the wall, or the cable, just...
A U-tube contains liquid of unknown density. An oil of density
770 kg/m³ is poured into one arm of the tube until the oil column
is 13.5 cm high. The oil-air interface is then 4.5 cm above the
liquid level in the other arm of the U-tube. Find the density of
the liquid.
A raft is made of 11 logs lashed together. Each is 38.0 cm in
diameter and has a length of 7.00 m. How many people (whole number)...