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For a few of the following problems the constant acceleration is due to gravity and will be notated as a = g = 32 ft/sec2. 'g' perhaps positive or negative depending on the context. Another quantity introduced is the coefficient of static friction µ which represents the relative amount of normal force which must be overcome in horizontal motion and typically varies from 0 to 1. When µ = 1 it acquires as a lot force to slide the object as it does to lift it.
Minimum Time for a Vehicle to go from 0 to 60 mph. The applicable equation is v = at, where a = µg. It is general practice to assume that the maximum practical value of the coefficient of friction µ for rubber tires on pavement is unity. In this case changing mph to fps we have 60 mph = 88 fps therefore 88 = 32 t and t = 2.75 sec.
Find out the velocity of the bullet: A bullet of weight W 1 = 5 N is fired into a body B 2 of weight W 2 = 45 N suspended by a string of length L = 1 metres. Because of i
The open square tube is subjected to the torque T= DEF Nm as shown in Fig Q2. The tube has the length 1m and wall thickness 5mm. a) Calculate the shear stress and angle of
What will be the criteria to be looked into get the pulley rpm increase
(a) Write short note on steady flow energy equation and its applications. (b) A heat engine operating between two reservoirs at 1000k and 300k is used to drive a heat pump which
The crate A of weight W=27lb is being pulled to the right by the winch at B. The crate starts at x=0 and is pulled a total distance 15ft over the rough surface for which the coeffi
Q. Source of Materials? The user may restrict sources of fabrication materials. If there is a restriction, the prospective manufacturers must be informed at the time of biddin
Find out change in length of circular bar of uniform taper Sol.: The stress at any cross section can be found by dividing load by area of cross section and extension can be
Determine the carbon content of steel: A hypoeutetoid steel which was cooled slowly from γ-state to room temperature was found to contain 10% eutectoid ferrite. Suppose no cha
what is the different torque rating of a helical gear one direction verses the other
actual division 2km is shown as 1 cm in a map.construct a clean scale to measure km which can travel a distance upto 30 km.Show measurement of 18 km in the scale
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