A 87.0 kg student sits on a chair which is solely supported by a solid 1.30...
A 87.0 kg student sits on a chair which is solely supported by a solid 1.30 meter-long steel rod 0.900 cm in diameter. What is the change in length of the rod produced by the student’s weight? (use the elasticity of Steel to be 200e9 N/m2)
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A 87.0 kg student sits on a chair which is solely supported by a
solid 1.30...
A 1200-kg car is being raised with a constant acceleration of 2.53 m/s2 by a crane,...
A 1200-kg car is being raised with a constant acceleration of 2.53 m/s2 by a crane, using a 20-m long steel cable that is 1.5 cm in diameter. Young's modulus for steel is 2.0 × 1011 N/m2. What is the change in length of the cable caused by lifting the car?
Problem 2: A stainless steel rod (k-21 W/m-K, p-8000 kg/m3, C,,-570 J/kg-K) with diameter D-10 mm is heat-treated as it...
Problem 2: A stainless steel rod (k-21 W/m-K, p-8000 kg/m3, C,,-570 J/kg-K) with diameter D-10 mm is heat-treated as it passes through a furnace at a speed of 2 cm/s. The furnace has a convection coefficient of 80 W/m2-K and an air temperature of 900°C. The furnace is 3 m long, and the stainless steel enters at 20°C. (a) Using a control volume of length S traveling with the rod, develop a differential equation for the rate of change of...
The rigid beam BD is supported by a smooth pin B, two circular rods at points...
The rigid beam BD is supported by a smooth pin B, two circular rods at points C and D and is subjected to two concentrated loads as illustrated below. Neglect the weight of the rigid beam and assume that when W= 0 the rigid beam is in the horizontal position and the rods are stress-free. Assume small rotations 2) (1 Assume that h 119 mm and b 112 mm Use the compatibility equations (geometry of deformation) to obtain the ratio...
A vertical solid steel post of diameter d = 27 cm and length L = 3.00 m is required to support a load of mass m = 8000 kg . You can ignore the weight of the post. Take free fall acceleration to be g=9...
A vertical solid steel post of diameter d = 27 cm and length L = 3.00 m is required to support a load of mass m = 8000 kg . You can ignore the weight of the post. Take free fall acceleration to be g=9.8m/ s 2 Part A What is the stress in the post? Express your answer using two significant figures. Part B What is the strain in the post? Express your answer using two significant figures. Part...
5. (20 points) We use strain gauge to create a fish weight scale. The strain gauges are mounted on a plastic tube with fish hanging on to it. The strain gauges have resistance R 2400 2 (unstrained...
5. (20 points) We use strain gauge to create a fish weight scale. The strain gauges are mounted on a plastic tube with fish hanging on to it. The strain gauges have resistance R 2400 2 (unstrained) and the GF 2.14. A (1) Which is the dummy gauge, A or B? Circle the dummy gauge. (2) Show how to wire the two gauges and two fixed 2400 Ω resistors into the bridge circuit to provide temperature compensation, using the graphs...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the ver...
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Problem 2: A stainless steel rod (k-21 W/m-K, p-8000 kg/m3, C,,-570 J/kg-K) with diameter D-10 mm is heat-treated as it passes through a furnace at a speed of 2 cm/s. The furnace has a convection coefficient of 80 W/m2-K and an air temperature of 900°C. The furnace is 3 m long, and the stainless steel enters at 20°C. (a) Using a control volume of length S traveling with the rod, develop a differential equation for the rate of change of...
The rigid beam BD is supported by a smooth pin B, two circular rods at points C and D and is subjected to two concentrated loads as illustrated below. Neglect the weight of the rigid beam and assume that when W= 0 the rigid beam is in the horizontal position and the rods are stress-free. Assume small rotations 2) (1 Assume that h 119 mm and b 112 mm Use the compatibility equations (geometry of deformation) to obtain the ratio...
5. (20 points) We use strain gauge to create a fish weight scale. The strain gauges are mounted on a plastic tube with fish hanging on to it. The strain gauges have resistance R 2400 2 (unstrained) and the GF 2.14. A (1) Which is the dummy gauge, A or B? Circle the dummy gauge. (2) Show how to wire the two gauges and two fixed 2400 Ω resistors into the bridge circuit to provide temperature compensation, using the graphs...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the vertical deformation of the spring if the spring constant is 700 kN/m. (ans: 21.43 mm) 2. A steel cable with a nominal diameter of 25 mm is used in a construction yard to lift a bridge section weighing 38 kN. The cable has an...
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