PS. Ch 14 Work Power and Machines
Quiz by Dieterle 1
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20 questions
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- Q1transfer of energy when a force makes something movepowerworkmachine30s
- Q2force applied by the user of the machineresistance force (output force)effort force (input force)output distanceinput distance30s
- Q3force applied by the machine to do the workoutput distanceresistance force (output force)effort force (input force)input distance30s
- Q4ration of resistance force/effort force (how the machines multiplies the input force)mechanical advantageefficiencyinput forceoutput force30s
- Q5the rate at which work is done (measured in watts)powerefficiencyhorsepowerwork30s
- Q6work applied by the user of the machinework inputwork outputresistance30s
- Q7work applied by the machinework outputwork inputeffort30s
- Q8work output/work input X 100%ideal mechanical advantage formulaactual mechanical advantage formulaefficiency formula30s
- Q9work output is always less than work input due to friction therefore efficiency is always less than 100%FalseTrueit depends on the machine30s
- Q10a bar that pivots around a point called a fulcrumwheel& axlepulleyleverinclined plane30s
- Q11See image3rd class lever2nd class lever1st class lever30s
- Q12See image2nd class lever1st class lever3rd class lever30s
- Q13See image2nd class lever1st class lever3rd class lever30s
- Q14a shaft connected to a wheelwheel and axlepulleyinclined planelever30s
- Q15sloping surface that reduces the amount of force needed to raise an objectleverinclined planewheel&axlepulley30s
