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shusha [124]
3 years ago
7

An object moves in a circle at a constant speed of 1.0 m/s. The radius of the circle is 1.0 m. If a force of 1.0 N acts toward t

he center of the circle, how much work does this force do as the object moves? 1. W = F (2 π r) for a circle radius of r. 2. W = F (π r2 ) for a circle radius of r. 3. Zero 4. W = m v2 r for a circle radius of r. 5. None of these
Physics
1 answer:
Vlad1618 [11]3 years ago
4 0

Answer:5

Explanation:

Given

speed of object v=1\ m/s

radius of circle r=1\ m

Force towards the center F=1\ N

Work done is given by the dot product of Force and displacement

and we know know displacement of the object is along the circle which is perpendicular to the force acting therefore Work done will be zero

W=F\cdot s\cos 90

W=0

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Zoe is setting up a track for a toy car. The track has a ramp that is 32° above horizontal. If Zoe wants the car to travel as a
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Answer:

Explanation:

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HELP ME ASAP!!!! PIC IS DOWN BELOW!
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I think it is B Because it sounds like the best choice
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3 years ago
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The speed of a 180-g toy car at the bottom of a vertical circular portion of track is 7.75 m/s. If the radius of curvature of th
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Answer:

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F = mv²/r................................ Equation 1

Where F = force, m = mass of the toy car, v = velocity, r = radius

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