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How much tension would be exerted on the pulley in Example Problem 5.4 if the weights were observed to be falling at 1.5 ft/s2 ?
Example Problem 5.4
A patient is exercising his shoulder extensor muscles with wall pulleys (Fig. 5.8). Weights of 20, 10, and 5 lbs are loaded on the weight pan, which weighs 4 lbs. The patient is able to exert 45 lbs on the pulley. What is the resultant force of the entire system?
What are the magnitude and direction of acceleration of the weights?
In the storage of flammable liquids, if the composition of the vapor-air mixture above the liquid surface falls within the flammability limits, a floating roof tank would need to used or the tank blanketed with inert gas. Check if the vapor compos..
Assuming that there are no other significant side reactions, calculate masses of alcohol and ether produced, per 1000 kg of allyl chloride fed to the reactor.
A thermocouple enclosed in a 3.2mm stainless steel sheath (e = 0.6) is inserted horizontally into a duct to measure the air temperature inside. The walls of the duct are at 650o C, and the true air temperature is 560o C. What temperature will be in..
A 30 mol% feed of benzene in toluene is to be distilled in a batch operation. A product having an average composition of 45 mol% benzene is to be produced. Calculate the amount of residue, assuming α = 2.5 and W0 = 100.
Which alarms should activate a shutdown trip, and which valves should be closed?
In terms of heat treatment and the development of microstructure, what are two major limitations of the iron-iron carbide phase diagram?
at atmospheric pressure ethyl acetate and ethyl alcohol form an azeotropic mixture containing 53.9 mole of ethyl
Minimize F in an SOP form, and obtain a possible realization.
Problem 1: For the circuit given in Figure 1 the power factor is 0.72 lagging and the power dissipated is 375 W.
Estimate the annual operating cost of providing refrigeration to a condenser with duty 1.2 MW operating at -5 ºC. The refrigeration cycle rejects heat to cooling water that is available at 40 ºC, and has an efficiency of 80% of the Carnot cycle ef..
Calculate the equilibrium conversion and the CSTR and PFR volumes necessary to achieve 98% of the equilibrium conversion and calculate the time to reach 90% conversion if the reactor is a batch reactor filled to the brim.
How much of this information could be obtained from laboratory or pilot-plant tests?
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