Math Problem Statement
Suppose you start an antique car by exerting a force of 350 N on its crank for 0.325 s. What angular momentum is given to the engine, in kg · m2/s, if the handle of the crank is 0.300 m from the pivot and the force is exerted to create maximum torque the entire time?
Solution
To find the angular momentum given to the engine, we can use the following steps:
-
Calculate the Torque () created by the force: where:
- (distance from the pivot),
- (force exerted).
Substituting the values:
-
Calculate the Angular Impulse, which is equal to the change in angular momentum: where .
Substituting the values:
Therefore, the angular momentum given to the engine is:
Would you like further explanation on any of these steps or concepts?
Here are some related questions to deepen your understanding:
- What is the relationship between torque and angular momentum?
- How would the angular momentum change if the distance from the pivot was increased?
- What would happen to the angular momentum if the force was applied for a longer time?
- Can you explain the concept of angular impulse in more detail?
- How does maximum torque affect the efficiency of starting the engine?
Tip: Remember, angular momentum is conserved in a closed system with no external torques. This concept is essential in rotational dynamics problems.
Ask a new question for Free
By Image
Drop file here or Click Here to upload
Math Problem Analysis
Mathematical Concepts
Torque
Angular Momentum
Angular Impulse
Formulas
Torque (\tau) = r \times F
Angular Impulse = \tau \times t
Theorems
Conservation of Angular Momentum
Suitable Grade Level
Grades 10-12
Related Recommendation
Angular Momentum Calculation of an Exercise Machine
Calculate Rotational Inertia from Angular Momentum and Angular Velocity
Calculate Angular Momentum of a Spinning Top
AP Physics C Rotational Motion Problem: Angular Impulse, Momentum, and Power
Car Wheel Rotation: Calculating Angular Velocity and Rotational Kinetic Energy