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Applied Science Group Assignment...
GROUP PSSIGNMENT TWO
SIMPLE MACHINESE
1. The diagram below shows a single pulley carrying a load of 10 N.
8. What is the velocity of the pulley?
b. What is the mechanical advantage?
1. If the pulley is 100% efficient?
ií. If the system is 50% efficient?
C. Why is the pulley likely to be less than 100% efficient?
der what effort is needed in the machine is om eficiente
euf the lond is lifted 2mhow much work is done on the load?
f. If the pulley is only
50% efficient, how much work is done by the operator to lift the
throrihirm​

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater