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dedylja [7]
3 years ago
12

Which force keeps and object moving in a circle?​

Physics
1 answer:
omeli [17]3 years ago
8 0

Answer:

Centripetal force

Explanation:

Centripetal force acts on an object moving in a circle.  It points towards the center of the circle and has a magnitude equal to m v² / r, where m is the object's mass, v is the object's velocity, and r is the radius of curvature.

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Answer You need to consider that the gravity on earth is 9.8 m/s/s. This means any object you let go on the earths surface will gain 9.8 m/s of speed every second. You need to apply a force on the object in the opposite direction to avoid this acceleration. If you are pushing something up at a constant speed, you are just resisting earths acceleration. The more massive and object is, the greater force is needed to accelerate it. The equation is Force = mass*acceleration. So for a 2kg object in a 9.8 m/s/s gravity you need 2kg*9.8m/s/s = 19.6 Newtons to counteract gravity. Work or energy = force * distance. So to push with 19.6 N over a distance of 2 meters = 19.6 N*2 m = 39.2 Joules of energy. There is an equation that puts together those two equations I just used and it is E = mgh

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Explanation:

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Match each situation
EastWind [94]
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In 0.60 seconds, a projectile goes from 0 to 610 m/s. What is the acceleration of the projectile?
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Explanation:

Acceleration a is expressed in the following formula:

a=\frac{V_{f}-V_{o}}{t}

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