A uniform plank of length 5.0 m and weight 211 n rests, Ask an Expert

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Q. A uniform plank of length 5.0 m and weight 211 N rests horizontally on two supports, with d = 1.17 m of the plank hanging over the right support. To what distance, x, can a person who weighs 412 N walk on the overhanging part of the plank before it just begins to tip?

Q. After a 0.380 kg rubber ball is dropped from a height of 1.95 m, it bounces off a concrete floor and rebounds to a height of 1.45 m.

Determine the magnitude and direction of the impulse delivered to the ball by the floor.

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Category:- Physics
Reference No.:- M9274885

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