Calculating Power: Torque on a 20 Kg Rod Pivoted at 6m | 500 Rad Rotation

  • Thread starter Thread starter b577phaty
  • Start date Start date
  • Tags Tags
    Rod Torque
Click For Summary
SUMMARY

The discussion focuses on calculating the average and instantaneous power exerted by a motor on a 20 Kg slender rod, pivoted at its center with a length of 6 m, when subjected to a torque of 2400 Nm. To find the average power, the formula used is P_avg = Torque × Angular Velocity, where the angular velocity is derived from the total angle of rotation (500 rad). The instantaneous power can be calculated using P_inst = Torque × Angular Velocity at the specific angle of 500 rad.

PREREQUISITES
  • Understanding of torque and its units (Nm).
  • Familiarity with angular motion and radians.
  • Knowledge of power calculations in rotational dynamics.
  • Ability to apply formulas for average and instantaneous power.
NEXT STEPS
  • Study the relationship between torque and angular velocity in rotational systems.
  • Learn how to derive angular velocity from angular displacement over time.
  • Explore the concepts of average power versus instantaneous power in physics.
  • Review examples of power calculations in mechanical systems involving torque.
USEFUL FOR

Physics students, mechanical engineers, and anyone interested in understanding power calculations in rotational dynamics.

b577phaty
Messages
4
Reaction score
0
A 20 Kg slender rod pivoted at its center has a length of 6 m. A motor applied a torque of 2400 Nm on the rod to turn it from rest.
(a) Find the average power by the motor when the rod rotates an angle of 500 rad. _____________________
(b) Find the instantaneous power of the motor at the moment that the rod rotates an angle of 500 rad. ______________________

I am unsure how to start this.
 
Physics news on Phys.org
You should at least list some formulas you think you might need. For example, a formula for power at least.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 19 ·
Replies
19
Views
4K
Replies
4
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 15 ·
Replies
15
Views
2K
Replies
1
Views
2K
  • · Replies 31 ·
2
Replies
31
Views
5K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
8K
Replies
11
Views
7K