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Chapter 2, Problem 18PQ

(a)

To determine

Sketch for the condition y=(y0cos2πtT)j^.

(a)

Expert Solution
Check Mark

Answer to Problem 18PQ

The sketch for the condition y=(y0cos2πtT)j^ is given in figure 1.

Explanation of Solution

Write an expression for the condition.

  y=(y0cos2πtT)j^

Here, y is the instantaneous position, y0 is the initial position, t is the time and T is the time period.

Here, y axis points upwards. The time starts at t=0. there will not be any negative value for time. At time t=0 the particle is at +y0.

Thus, the sketch for the condition y=(y0cos2πtT)j^ is given in figure 1.

Webassign Printed Access Card For Katz's Physics For Scientists And Engineers: Foundations And Connections, 1st Edition, Single-term, Chapter 2, Problem 18PQ

(b)

To determine

The position of the particle at t=0,12T,T,32T,2Tand 52T.

(b)

Expert Solution
Check Mark

Answer to Problem 18PQ

The position of the particle at t=0,12T,T,32T,2Tand 52T are y0j^,y0j^,y0j^,y0j^,y0j^andy0j^ respectively and the positions are marked in figure 1.

Explanation of Solution

Write an expression for the condition.

  y=(y0cos2πtT)j^ (I)

Conclusion:

For t=0:

Substitute 0 for t in equation (I).to find y.

y=(y0cos2π(0)T)j^=(y0cos(0))j^=y0j^

For t=T2:

Substitute T/2 for t in equation (I).to find y.

    y=(y0cos2π(T2)T)j^=(y0cos(π))j^=y0j^

For t=T:

Substitute T for t in equation (I).to find y.

    y=(y0cos2π(T)T)j^=(y0cos(2π))j^=y0j^

For t=3T2:

Substitute 3T/2 for t in equation (I).to find y.

    y=(y0cos2π(3T2)T)j^=(y0cos(3π))j^=y0j^

For t=2T:

Substitute 2T for t in equation (I).to find y.

    y=(y0cos2π(2T)T)j^=(y0cos(4π))j^=y0j^

For t=5T2:

Substitute 5T/2 for t in equation (I).to find y.

    y=(y0cos2π(5T2)T)j^=(y0cos(5π))j^=y0j^

Thus, the particle can be seen at y0j^,y0j^,y0j^,y0j^,y0j^andy0j^ when the time is t=0,12T,T,32T,2Tand 52T respectively and the positions are marked in figure 1.

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Chapter 2 Solutions

Webassign Printed Access Card For Katz's Physics For Scientists And Engineers: Foundations And Connections, 1st Edition, Single-term

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