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3 years ago

Muscles use force to move objects. When using a ramp to do work, would your muscles use more force or less force?

Physics

2 answers:

White raven [17]3 years ago

7 0

Less because the ramp is letting off force but i does depend on the way you are going on the ramp

Mademuasel [1]3 years ago

4 0

If it's up then more if it's down then less

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A woman steps in front of a child to keep him from running off. which term best describes this example? negative work positive w

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Answer:

negative force

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so correct answer will be

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Blizzard [7]

Answer:

Considering a triangle like the one of the figures, you can obtain the total magnetic force applied on it like the addition of the forces applied to each of the 3 sides.

Been the magnetic force formula:

$F=\int\limits^a_b {I} \, \overline {dx} \times \overline {B}$

For each segment:

Segment 1 (from [0,0,0] to [a,0,0]):

$F=\int\limits^a_0 {I} \, \overline {x}dx \times B \overline {z}=-IBa\overline {y}$

Segment 2 (from [a,0,0] to [0,a,0]):

$F=\int\limits^{(0,a)}_{(a,0)} {I} \, \frac{\sqrt{2} }{2} (\overline {x}+\overline {y})dx \times B \overline {z}=IB2a(\overline {x}+\overline {y})$

Segment 3 (From [0,a,0] to [0,0,0]):

$F=\int\limits^0_a {I} \, \overline {y}dx \times B \overline {z}=-IBa\overline {x}$

Total force on the wire loop:

$F_{T} =F_{1} +F_{2} +F_{3} =-IBa\overline {y}+IB2a(\overline {x}+\overline {y})-IBa\overline {x}=0N$

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