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A single plate clutch is designed to transmit 10 kW power at angular velocity of 200 rad/s, the mass moment of inertia of input shaft and that of output shaft are 0.1 kg-m² and 0.4 kg-m² respectively. What will be the time required to bring the output shaft to the rated speed from rest?
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A single plate clutch is designed to transmit 10 kW power at angular v...
Problem Statement

A single plate clutch is designed to transmit 10 kW power at angular velocity of 200 rad/s, the mass moment of inertia of input shaft and that of output shaft are 0.1 kg-m² and 0.4 kg-m² respectively. What will be the time required to bring the output shaft to the rated speed from rest?


Solution

Given parameters:


  • Power (P) = 10 kW

  • Angular velocity (ω) = 200 rad/s

  • Mass moment of inertia of input shaft (J₁) = 0.1 kg-m²

  • Mass moment of inertia of output shaft (J₂) = 0.4 kg-m²



Calculation of Torque

The torque required to accelerate the output shaft from rest can be calculated as:

Torque (T) = Power (P) / Angular velocity (ω)

Substituting the given values:

T = 10,000 / 200 = 50 N-m


Calculation of Angular Acceleration

The angular acceleration of the output shaft can be calculated as:

Angular acceleration (α) = Torque (T) / Mass moment of inertia (J₂)

Substituting the given values:

α = 50 / 0.4 = 125 rad/s²


Calculation of Time

The time required to bring the output shaft to the rated speed from rest can be calculated using the following kinematic equation:

ω = ω0 + αt

where,


  • ω = final angular velocity = 200 rad/s

  • ω0 = initial angular velocity = 0 rad/s

  • α = angular acceleration = 125 rad/s²

  • t = time


Substituting the given values:

200 = 0 + 125t

t = 1.6 s


Conclusion

The time required to bring the output shaft to the rated speed from rest is 1.6 seconds.
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A single plate clutch is designed to transmit 10 kW power at angular velocity of 200 rad/s, the mass moment of inertia of input shaft and that of output shaft are 0.1 kg-m² and 0.4 kg-m² respectively. What will be the time required to bring the output shaft to the rated speed from rest?
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