A) A block with mass m=20kg is attached to massless strings as shown in figure.

Question

A) A block with mass m=20kg is attached to massless strings as shown in figure. Determine the tension in the three strings. Angle between the 2 strings is 125 degrees.

B) Andrea and John sit on a see saw that consists of a uniform beam of mass 20kg and a rock that acts as a pivot point. the length of the beam is 8m. Mass of John is 70kg mass of Andrea is 50kg. How far from John should the pivot point be so that the seesaw is balanced and does not move?

C) A cylinder of mass M is supported bu frictionless walls as shown in figure. determine the force exerted by each wall on the cylinder.

Explanation / Answer

c)

F = M * g * cos(50deg)

F = M * g * cos(40deg)

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