Young’s modulus for a brass mixture is 8.96 x 10 11 Pa. A 225 N object...
A copper (Young's modulus 1.1 x 1011 N/m2) cylinder and a brass (Young's modulus 9.0 x 1010 N/m2) cylinder are stacked end to end, as in the drawing. Each cylinder has a radius of 0.38 cm. A compressive force of F = 8600 N is applied to the right end of the brass cylinder. Find the amount by which the length of the stack decreases.
A vertical wire 2.1m long and of 0.0042 cm2 cross sectional area has a Young’s modulus of 2.00 x 1011 Pa. A 4.0 kg object is fastened to its end and stretches the wire elastically. If the object is now pulled down a little and released, the object undergoes vertical single harmonic motion. Find the period of its vibration.
A copper wire of length 1 meter, cross sectional area 7.1 X 10‑6 m2 and Young’s modulus 11 X 1010 N/m2 has a mass load hung on it. If its increase in length is 1 mm, what is the value of the mass? 400kg 80kg 800kg 40kg 200kg
A copper wire of length 1 meter, cross sectional area 7.1 X 10‑6 m2 and Young’s modulus 11 X 1010 N/m2 has a mass load hung on it. If its increase in length is 1 mm, what is the value of the mass? a) 40kg b) 80kg c) 200kg d) 400kg e) 800kg Please help me. Thank you
A A steel wire is used to lift heavy object. The cable has a diameter of (5.25 + A) mm and an initial length of (24.5 + B) m. If the cable stretches 2.50 mm, what is the mass of the heavy object? Use 20.0 x 1010 Pa for Young’s modulus for steel. Give your answer in kg and with 3 significant figures. A= 0 b= 1
An 9.15-kg stone at the end of a steel (Young's modulus 2.0 x 10^11 N/m2) wire is being whirled in a circle at a constant tangential speed of 13.9 m/s. The stone is moving on the surface of a frictionless horizontal table. The wire is 4.40 m long and has a radius of 3.25 x 10^-3 m. Find the strain in the wire.
8. Young's modulus Y of aluminum is 7 x 101°N/m2 , If you apply 10' N force to end of a wire radius 1 cm, length 1 m) hanging from ceiling, how much will the length increase (a) 7cm (b) 0.00007m (c)2.29m (d) none of them solution : (d) (F/A) = Y(AL/L), thus AL = (FL)/(YA) = (104 x 1)/(7 x 1010 X7X (0.01)2) = 10-2/(77) = 0.045 x 10-?m
A particular human hair has a Young's modulus of 3.80 x 10 N/m² and a diameter of 150 um. If a 234 g object is suspended by the single strand of hair that is originally 15.0 cm long, by how much AL hair will the hair stretch? AL hair = m If the same object were hung from an aluminum wire of the same dimensions as the hair, by how much ALA would the aluminum stretch? ALAI = ALA =...
A circular cross section steel bar with a Young’s modulus E=2.1x10^11 N/m^2 and an area A=50mm^2 and a length L=3m is installed horizontally between and welded to two walls. Assuming that a torque of M=5,000Nm is applied to the bar at a distance of l=2m from the left wall please answer the following: a. Is this system statically determinate or indeterminate? b. Determine: i. What are the reactions from the walls? ii. Plot the variation of torque in the bar....
The interatomic spring stiffness for tungsten is determined from Young’s modulus measurements to be 90 N/m. The mass of one mole of tungsten is 0.185 kg. If we model a block of tungsten as a collection of atomic “oscillators” (masses on springs), note that since each oscillator is attached to two “springs,” and each “spring” is half the length of the interatomic bond, the effective interatomic spring stiffness for one of these oscillators is 4 times the calculated value given...