Key Equations - Midterm 2 Flashcards
1
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2
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3
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4
Q
True or False: the normal force does no work when it is perpendicular to the displacement
A
True: over short time intervals the normal force does no work when it is perpendicular to displacement (FN in y direction and displacement in x direction)
5
Q
A
6
Q
How do you resolve work up a ramp into x and y components?
A
7
Q
How do you find the angle or height of the incline?
A
8
Q
FBD for moving a box up an incline
A
9
Q
A
10
Q
True or false: The work done is the same regardless of the length of the ramp (i.e. the work required to move a crate up to a 2m ledge is the same for a 10m ramp as it is for a 20 m ramp)
A
True: distance will cancel out so the work is the same just performed over a greater distance.
11
Q
What is the work done by the ground and friction?
A
12
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A
13
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14
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15
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16
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17
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