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Figure P12.9 illustrates a Turbo Booster toy that launches a 60-gram "insect" glider (projectile) by compressing a helical spring and then releasing the spring when the trigger is pulled. When pointed upward, the glider should ascend approximately 8 m before falling. The launcher spring is made of carbon steel wire, with a diameter d = 1.1 mm. The coil diameter is D = 10 mm. Calculate the number of turns N in the spring such that it would provide the necessary energy to the glider. The total spring working deflection is x = 150 mm with a clash allowance of 10%.
the upper surface of a 50-cm-thick solid plate k237 wmk is being cooled by water with temperature of 20 degrees
List four elements used in DFDs, draw the symbols, and explain how they are used.
An elevator is hung by a steel rope. The rope has a cross-sectional area of 250mm2 and a modulus of elasticity of 70 GPa. the upward acceleration when the elevator starts is 4 m/s2. the rope is 100m long and the elevator weigh 1000 kg. determine the ..
Calculate molar absorptivities for In- and HIn at 485 and 625 nm.
The motor is delivering its rated output power at a speed of 910 rpm. Rotational loss of the motor is 600 watts. Using the approximate equivalent circuit, (a) determine the rated power of the motor
the particle a is mounted on a light rod pivoted at o and therefore is constrained to move in a circular arc of radius
Knowing that a driver accelerates and decelerates at the same constant rate, determine the magnitude of her acceleration if she travels at the speed limit as much as possible.
Work content time = 42.0 min. Assume line efficiency = 0.97, balancing efficiency = 0.92, and repositioning time = 6 sec.
a 3-phase 400 v 50 hz 6 pole cage induction motor of rating 20 kw with slip at rated load of 4 has a starting toque
water is flowing turbulently at a mean velocity of um10 fts in a 1.0 - in. i.d. horizontal pipe and the fanning
a rubber stopper covers the drain in your bathtub. estimate the force that the water exerts on the stopper. list all
What is the average velocity if the diameter changes to 6 in.? b. Express the average velocity in terms of an arbitrary diameter.
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