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Write a program to solve Problem 3.123 for a range of initial velocities. Let the car mass and final velocity be input variables.
Problem 3.123
A car with mass 1275 kg is driven at 60 km/h when the brakes are applied quickly to decrease its speed to 20 km/h. Assume that the brake pads have a 0.5-kg mass with a heat capacity of 1.1 kJ/kg K and that the brake disks/drums are 4.0 kg of steel. Further assume that both masses are heated uniformly. Find the temperature increase in the brake assembly.
A clay ball (m=0.82 kg) is thrown at a metal target (M=1.72 kg) that is suspended from a cable. The ball is released 1.5 m above teh ground at an angle of 32 degrees.
A 900-mm strip of steel is bent into a full circle by two couples applied. Determine (a) the maximum thickness t of the strip if the allowable stress of the steel is 420 MPa, (b) the corresponding moment M of the couples.
A distance of 200 ft must be taped in a manner to ensure a standard deviation smaller than ± 0.03 ft. What must be the standard deviation per 100 ft tape length to achieve the desired precision?
The average rate of water consumption from this tank is 6.25 kL per day, every day. The farmer refills the tank (overnight) every 14 days, using a pump that takes water from a nearby river. The top of the tank is 53m (vertically) above the level o..
A 600 MWe power plant has an efficiency of 36% with 15% of the waste heat being released to the atmosphere as stack heat and the other 85% taken away in the cooling water.
Cable AC is 70 ft long, and the tension i nthe cable is 5250 lb. Determine the x, y, and z components of the force exerted by the cavle on the anchor C. Also, find the angles theta-x, theta-y, and theta-z defining the direction of the force.
What is the mass flow rate of steam around the cycle and the rate of heat rejection in the condenser? Find the thermal efficiency of the power plant and how it compares with that of a Carnot cycle.
In the accompanying diagram (which represents the market for chocolate candy bars), the initial equilibrium is at the intersection of S1 and D1. a. Circle the new equilibrium if there is an increase in cocoa prices.
A 0.02wt% C steel is to be carburized at 1200°C in 4 hrs with a point 0.6mm beneath the surface reaching 0.45wt%C. calculate the carbon content required at the surface of the steel.
the behaviour of structural materials using comparative statement when they are formed into structural
The software FoilSimU III was developed by the NASA and can be obtained at {http://www.grc.nasa.gov/ www/K-12/UndergradProgs/index.htm}.
You are in charge of evaluating the safety (hazard) of a low water crossing. Traffic surveys show that the "Aaverage"vehicle using the crossing is semi-rectangular in shape (10 ft long, 5 ft wide, and 4.0 ft high - not including the distance from the..
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