THE PRACTICE STUDIO

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PRACTICE · MEMBERSIntermediate · Single correct

PRACTICE / Static equilibrium

How is a point load shared?

A massless horizontal beam is supported at x = 0 and x = 4 m. A downward 120 N load acts at x = 1 m.

Find the upward reaction at the right support.

Organize the givens & assumptions
  • length = 4 m
  • load = 120 N at 1 m

Rigid massless beam, point load and simple supports; static equilibrium; supports can supply the stated upward reactions.

  1. A120 N120\ \mathrm N
  2. B30 N30\ \mathrm N
  3. C90 N90\ \mathrm N
  4. D60 N60\ \mathrm N

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