QUESTION 2 (8 marks) An object of mass 97.3 grams travels up and down as it is attached to a vertical spring. As the mass travels up and down, it feels a spring force [up] and gravity [down]. Calculate the stretch of the spring in cm when the acceleration is 2.57 m/s^2 [down] . The spring constant of the spring is 11. 4N/m.QUESTION 3 (8 marks) Please refer to the diagram for question 3. A parallel plate setup is such that the electric field is 1.96x10 5 N/C[S] . A proton travels 8. 58x10^4 m/s[E], perpendicular to the electric field. The proton feels an electric force from the electric field. A magnetic field can be added to the system such that the sum of the electric and magnetic forces on the proton is zero, which allows the proton to travel forward at constant velocity. Calculate the strength and direction of such a magnetic field. Proton: mass = 1. 67x10^-27kg, charge = +1. 60x10^-190.Diagram for question 3 N ++++++++++++++++++++++++++++++++ W E p+ S