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Force Questions Yr 12

by alexparker
Tags: force, physics, school
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alexparker
#1
Feb11-10, 04:37 PM
P: 18
A Child uses a broom stick to push a 2.0kg bucket of water across a floor. The Broom Stick is held at an angle of 60 degrees to the horizontal and exerts a force of 100N on the bucket. The bucket is initially at rest and encounters a constant frictional force of 10N while moving a distance of 5.0m. Assume the g is 9.8m/s/s, and that the effects of air resistance are negligible.

For the 5.om distance, calculate the work done by:
A) the horizontal component of the 100N Force

B) The frictional Force

C) The Resultant horizontal Force
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jhae2.718
#2
Feb11-10, 04:53 PM
PF Gold
jhae2.718's Avatar
P: 1,153
Have you tried drawing a free body diagram of the forces involved and finding the net horizontal force?

Use [itex]W=F\cdot d[/itex] to calculate the work.


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