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23 Nov 2019
Question: A 3x10 4 kg boat moves directly towards a dock withspeed 0.5m/s. The boat collides with thick upright wooden posts infront of the dock, which are designed to absorb the impact. Theposts bend 1.4m (acting as ideal springs) before the boat comes torest. A) As the boat comes to rest, is the work done on the boat bythe posts positive or negative? (Please explain would a goodexample of how to figure out when the work is positive or negativedone on an object) B)Calculate the force constant of the posts. Thanks for the help in understanding this concept.
Question: A 3x10 4 kg boat moves directly towards a dock withspeed 0.5m/s. The boat collides with thick upright wooden posts infront of the dock, which are designed to absorb the impact. Theposts bend 1.4m (acting as ideal springs) before the boat comes torest.
A) As the boat comes to rest, is the work done on the boat bythe posts positive or negative? (Please explain would a goodexample of how to figure out when the work is positive or negativedone on an object)
B)Calculate the force constant of the posts.
Thanks for the help in understanding this concept.
