A diving board length L = 5.00m that weighs 250N is supported by two pillars. On

Question

A diving board length L = 5.00m that weighs 250N is supported by two pillars. One pillar is at the left end of the diving board, as shown below; the other is distance d = 1.65m away

PART A: Find the direction of the force exerted by the left pillar when a 80.0kg diver stands at the far end of the board.

PART B: Find the magnitude of the force exerted by the left pillar when a 80.0kg diver stands at the far end of the board.

Part C:Find the direction of the force exerted by the right pillar when a 80.0kg diver stands at the far end of the board.

Part D:Find the magnitude of the force exerted by the right pillar when a 80.0kg diver stands at the far end of the board.

Explanation / Answer

Moment about left pillar,

Nr (1.65) - 200 (5/2) – 80(9.8) 5 = 0

Nr = 2678.78 N

Nl = 1034 – 2678.78 = - 1644.78 N

A) Direction of Nl is downwards.

B) Nl = 1645 N

C) Direction of Nr is upwards.

D) Nr = 2679 N

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