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7nadin3 [17]
3 years ago
15

Why is ammeter connected in series in an electric circuit?

Physics
1 answer:
topjm [15]3 years ago
8 0
In order to measure the size of the electrical current flowing in the circuit,
the current must pass through the meter.
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A rugby player sits on a scrum machine that weighs 200 Newtons. Given that the coefficient of static friction is 0.67, the coeff
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a. 850 N is the minimum force needed to get the machine/player system moving, which means this is the maximum magnitude of static friction between the system and the surface they stand on.

By Newton's second law, at the moment right before the system starts to move,

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• net vertical force

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It follows that

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where F[weight] is the combined weight of the player and machine. We're given the machine's weight is 200 N, so the player weighs 1068.66 N and hence has a mass of

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b. To keep the system moving at a constant speed, the second-law equations from part (a) change only slightly to

∑ F[h] = F[push] - F[k. friction] = 0

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