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4 years ago

1) Johnny completing the spring lab, and makes 12 waves in 10 seconds. What is the

Physics

1 answer:

ankoles [38]4 years ago

5 0

Answer:

1.2 Hz

Explanation:

Frequency: This can be defined as the number of cycles completed in one seconds. The unit of frequency is Hertz (Hz)

From the question above,

f = N/t.................... Equation 1

Where f = frequency, N = number of wave or cycle completed by Johnny, t = time take to complete the waves.

Given: N = 12 waves, t = 10 s

Substitute into equation 1

f = 12/10

f = 1.2 Hz

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Answer:

$W =84.6\ Nm$

Explanation:

given,

F = 14.1 i + 0 j + 5.1 k

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Vilka [71]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The value is $\alpha =2.538 \ rad/s^2$

Explanation:

From the question we are told that

The mass of the wheel is m = 6.9 kg

The radius is $r = 0.69 \ m$

The radius of gyration is $k_G = 0.4\ m$

The angle is $\theta = 47^o$

The force which the massless bar is subjected to $F = 22.5 \ N$

Generally given that the wheels rolls without slipping on the flat stationary ground surface, it implies that point A is the center of rotation.

Generally the moment of inertia about A is mathematically represented as

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Here $I_G$ is the moment of inertia about G with respect to the radius of gyration which is mathematically represented as

$I_G = M * k_G$

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