A sand mover at a quarry lifts 2.00E3 kg of sand per minute averticle distance of 12.0 m . The sand is initially at rest and isdischarged at the top of the sand mover with a speed of 5.00 m/sinto a loading chute. What is the minimum power that must besupplied to this machine ( which aaumes no nonconservativeforces)?

Question

Roosevelt Houghton · Accepted Answer

Each minute (= 60 sec), the machine performs work &quot;W&quot; given by: W=m×g×h+(12)×m×v2  =m×{g×h+(12)×v2}  =(2.00E3kg)×{(9.8ms2)×(12.0m)+(12)×(5.00ms)2}=2.602e+5  Joules Since this work is performed every 60 sec, power requirementis: {Power}=W60=4337W

A sand mover at a quarry lifts 2.00E3 kg of sand per minute averticle distance of 12.0 m . The sand is initially at rest and isdischarged at the top o

Answered question

Answer & Explanation

New Questions in Other