A block of mass m = 3.40 kg is released from rest from point circled A and slide

Question

A block of mass m = 3.40 kg is released from rest from point circled A and slides on the frictionless track shown in the figure below. (Assume ha = 5.10 m.)

point      m/s point      m/s A block of mass m = 3.40 kg is released from rest from point circled A and slides on the frictionless track shown in the figure below. (Assume ha = 5.10 m.) J to point m/s (b) Determine the net work done by the gravitational force on the block as it moves from point m/s point. point and (a) Determine the block's speed at points

Explanation / Answer

a) vB = sqrt(2*g*(ha-3.2)

= sqrt(2*9.8*(5.1-3.2))

= 6.1 m/s

vC = sqrt(2*g*(ha-2)

= sqrt(2*9.8*(5.1-2))

= 7.795 m/s

b)

W = m*g*(ha-2)

= 3.4*9.8*(5.1-2)

= 103.292 J

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