![]() The balance arms have sizes l1 and l2, lead density h1 =īarrel with grain weight 297 kg. At the end of the other arm is an aluminum body with a volume of V2. How heavy is an empty container?Īt the end of one arm of the equilibrium scales, which are in equilibrium, a lead body with a volume V1 is suspended in the air. The container with water weighs 1.48 kg when we cast 75% of the water content of water weight 0.73 kg. Pastry box 520: dimensions 600mm x 400mm x 200mm (l x w x h), load capacity 15 kg. Given that analysis of the dry combustion products by volume is 16.2% CO2, 3.5% O2, and 80.3% N2, during the combustion process of anthracite, which conĪ Mazda van with a box body with internal dimensions of 1.6 m x 3.1 m x 1.7 m (w x d x h) with a payload of 1.7 tons delivers crates with pastries. The gravimetric analysis of an anthracite fuel is 90% carbon, 3% hydrogen, 2% oxygen, and 1% nitrogen. How many kilometers does the cyclist travel before the car catches up with him? At 8:30, a passenger car leaves A at a speed of 75 km/h along the same route. What force must the worker exert on the crank handle when pulling the shackle with a constant movement from a depth of 5 m if the shaft diameter is An empty shackle weighs 8 kg, a total of 64 kg. When digging a well, a chained winch balances the material. On which floor did she get off? (Don't forget what the basement is) She got on the third floor, went down to the basement, went up five stories, went down two floors, up three, up two again, and got out. Selected measured values of liquid temperature as a function of time are recorded in the tĪt what acceleration moves a train with a weight of 800 t start if the traction force of the locomotive is 2 * 10 5 N? 80% of the supplied energy is used to heat the liquid. ![]() By what value will the potential gravitational energy of the cabin increase? What useful work will the elevator motor do? The height of one floor is 5m.Ĭolorless liquid weighing m = 200 g is heated with constant stirring on a stove with power input P0 = 600W. The elevator car weighing 400 kg rises from the third to the fifth floor. Determine its gravitational potential energy: a) relative to the tabletop, b) relative to the floor if the table top is 1m above the floor.Īt what horizontal distance reaches the car weight m = 753 kg speed v = 74 km/h when the car engine develops a tensile force F = 3061 N. We lift a weight of 2 kg to a height of 50 cm above the top of the table. To what floor does the elevator arrive? How many The lift goes from the ground floor to the 2nd floor, then down to the 3rd underground floor, nine floors up, and finally four floors down. ![]() The panel house has ten over-ground stories and four underground. How long has it taken for the load to be lifted if the efficiency is 75% and the engine has a power input of 5 kW? The construction lift lifted a load weighing 300 kg to a height of 12 m with a uniform movement. Obtained in step 13, for your calculations.What is the weight of a car when it moves on a horizontal road at a speed of v = 50 km/h at engine power P = 7 kW? The friction coefficient is 0.07 Then, use the information from the table to evaluate if it exceeds the breaking strength of each material. However, breaking strength and yield strength are usually the same order of magnitude, so this is a good approximation.Ĭalculate the specific stress experienced by the cable at the point where tension is maximal. Typically, metal structures are designed to stay well below the yield strength, not the breaking strength. The yield strength is the maximum amount of stress that a material can bear without showing irreversible deformation. * Note: Most metals-like steel, aluminum, and titanium alloy-are ductile, meaning they will stretch permanently before breaking (like bending a paper clip it permanently deforms before it breaks). Must be due to the gravitational and centrifugal forces. Represents the change in tension in the cable at point P. This tells you how the tension changes along the length of the cable. ![]() Represents the tension in the cable at the point P with x-coordinate x. Represents the gravitational and centrifugal forces combined. Since in the rotating reference frame, the piece of cable does not move along the x-axis, there is no net force along the x-direction.
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