Physics, 18.10.2020 22:01 valerieaj113

1. A skateboarder is skating over a circular bump. He is at the top of the bump and is moving rightward. Is the normal force exerted on the skateboarder by the bump greater
than, less than, or equal to the weight of the skateboarder? Explain your reasoning.

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Answer from: mangociruelo9402

The normal force exerted on the skateboarder is less than the weight due to the effect of centripetal force.

Given data:

The position of skateboarder is at top of the circular bump.

And direction of motion of Skateboarder is towards rightward.

Since, the skateboarder is undergoing the motion over the circular path, then it will have both horizontal angular motion (moving rightward) and vertical angular motion (over the bump).

The effect of the weight of the skateboarder on the ground is reduced by the centripetal forces acting on the skateboarder and the normal force exerted on the skateboarder by the bump is equal to the reduced weight and is therefore less than the actual weight of the skateboarder.

Thus, we can conclude that the normal force exerted on the skateboarder is less than the weight due to the effect of centripetal force.

Learn more about the centripetal force here:

link

Answer from: andreamarie2004amg

The normal force exerted on the skateboarder by the bump is less than the weight of the skateboarder

Explanation:

The given parameters are;

The location of the skateboarder = The top of the circular bump

The direction of motion of the skateboarder = Rightward

Therefore, given than the skateboarder has both horizontal angular motion (moving rightward) and vertical angular motion (over the bump), The effect of the weight of the skateboarder on the ground is reduced by the centripetal forces acting on the skateboarder and the normal force exerted on the skateboarder by the bump is equal to the reduced weight and is therefore less than the actual weight of the skateboarder.

Answer from: Quest

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

Answer from: Quest

double the distance = divide strength by 4

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