Please answer as soon as possible and make sure answer is correct. Thanks... A b

Question

Please answer as soon as possible and make sure answer is correct. Thanks...

A block of mass m 22.0 kg is connected to a block of mass m36.0 kg by a massless string that passes over a light, frictionless pulley. The 36.0-kg block is connected to a spring that has negligible mass and a force constant of k-300 N/m as shown In the figure below. The spring is unstretched when the system is as shown In the figure, and the Incline is frictionless. The 22.0-kg block is pulled a distance h 22.0 cm down the incline of angle ? 40.0° and released from rest. Find the speed of each block when the spring is again unstretched m/s m/s

Explanation / Answer

By Conservation of energy

(1/2)(m1+m2)V2 =-m1ghSin(o)+m2gh+(1/2)kh2

(1/2)(22+36)V2 = -22*9.81*0.22Sin40 +36*9.81*0.22 +(1/2)*300*0.222

V=1.37 m/s

SInce they are connected to same string .they both have same velocities

Vm1=Vm2=1.37 m/s

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