physics worksheet

It is a physics calculus 210. 

I want correct answers, with showing the work.

I have attached the file.

(1) An air-track glider (m = 0.4 kg) is pushed against a Hooke’s-Law spring (k = 150 N/m), compressing the spring by 10 cm. The glider is then released and the glider coasts upward along the slanted track. How far along the track does the glider travel before starting back down?

 (2) The potential energy of a 4-kg particle is given by U(x, y, z) = –(5 N/m)x 2 – (4 N/m2 )y 3 . (Assume there is no gravitational force, and this is its total potential energy.) 

(a) What are the x-, y-, and z-components of the force acting on this particle? 

(b) If the particle is released from rest at the point (x0, y0, z0) = (0, +2 m, 0), what is its speed after traveling a distance of 5 m? (Hint: In which direction will the object move?)

 

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