57 335
Assignments Done
Successfully Done
In February 2018
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Mechanics | Relativity Question for mia

Question #3848
A 0.73 kg magnetic target is suspended on a string. A 0.025 kg magnetic dart, shot
horizontally, strikes it head on. The dart and the target together swing up 12 cm above the
initial level. What was the initial velocity of the dart?
Expert's answer
Let m1 be the mass of the magnetic dart, m2 - mass of the target.
V - initial velocity´╗┐ of the dart.
Consider the target and the dart didn't have the initial potential energy,
let's use the law of conservation of energy´╗┐:

E1 = E2,
E1 - initial energy of the system,
E2 - energy of the system after the collision.
E1 = Ek - kinetic energy,
E2 = Ep - potential energy

m1*V2 = (m1 + m2)*g*h

V = sqrt((m1+m2)*g*h/m1)
V = sqrt((0.025+0.73)*9.8*0.12/0.025) = 5.96 m/s.

So, the initial velocity of the dart is 5.96 m/s.

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!


No comments. Be first!

Leave a comment

Ask Your question