ok i need adetailed explanation because i really don\'t understand thisstuff...
ID: 1752737 • Letter: O
Question
ok i need adetailed explanation because i really don't understand thisstuff... so confusing! thanks and have a great day!thanks and have a great day! (a) Calculate, for a coordinate system at restin the factory, the kinetic energy supplied to the crate.
1 J
(b) Calculate, for a coordinate system at rest in the factory, themagnitude of the kinetic frictional force acting on the crate.
2 N
(c) Calculate, for a coordinate system at rest in the factory, theenergy supplied by the motor.
3 J
(d) Explain why the answers to (a) and (c) are different.
4
Explanation / Answer
Initial total energy = PE + KE = 25 + (1/2)mv2 =25+.5(1.48)(64) = 72.36 J a) yes the particle can reach x=1 m with a velocity v which will begiven by 50 + .5(1.48)v2 = 72.36 v = 5.5 m/s b) to the left of 4m, the force would be pointing to the right andof magnitude dU/dx = slope = 12.5 N c)yes the particle can reach x=7 m with a velocity v which will begiven by 60 + .5(1.48)v2 = 72.36 v = 4.09 m/s d) to the right of 5m, the force would be pointing to the left andof magnitude dU/dx = slope = 35 N hope this helps!
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