Load is the resistance to be overcome by the machine. the effort is the force required to overcome the resistance to get the work done by the machine. This method of determining velocity ratio is used for various pulley systems considered here. 1. First Order Pulley System. A first-order pulley system is shown in the below figure.
10. (a) Calculate the work done on a 1500-kg elevator car by its cable to lift it 40.0 m at constant speed, assuming friction averages 100 N. (b) What is the work done on the lift by the gravitational force in this process? (c) What is the total work done on the lift? (OpenStax 7.3) . × J, − . × J, 0 J 11.
View Solution. Q 5. A man weighing 80 kg carries a weight of 40 kg on the top of a tower 60 m high. Find the work done by the man. Take g = 10m/s2. View Solution. Click here:point_up_2:to get an answer to your question :writing_hand:a man weighing 70 kg carries a weight of 10 kg to top of a.
To find the work required to empty a tank, first divide the tank into an infinite number of slices, then calculate the work required to remove a single slice of substance from the tank, then develop an equation to solve for the work needed to empty the entire tank, based on the work that was required to remove the single slice.
"Work" rArr" "W=98.1J "It is assumed that the potential energy of objects located at" "ground level is zero." "If the object is higher than the ground level, it gains potential energy". "We can calculate the potential energy of objects above ground" "level using the equation given below." E_p=m g h "Where m:mass of object , h:height from ground level" E_p=5*9.81*2 E_p=98.1J "A change in
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find the work done when a 25 kg weight
