Variables
What is the term for the measure of a force's ability to cause rotation?
(Answer: Torque)
What torque is required to wrench a bolt with a force of 3 N and the bolt is .03 M?
(Answer: a. 0.09
What condition must be met for an object to be in equilibrium?
T= FXd and sometimes sinTheta
Who is the "father" of Physics?
Isaac Newton
Benjamin Franklin was the (#) president.
Benjamin Franklin was never president
What is the equation for torque?
T= Fr
A 10 N force is applied 2 m from a pivot at 90°. What is the torque?
20 N*m
A 10 N force acts clockwise and a 10 N force acts counterclockwise at the same distance from the pivot. Is the system in rotational equilibrium?
Yes, because the torques cancel.
What is gravity's constant?
9.81 m/s^2
What year did Hebron HS and Alden HS combine to make Alden-Hebron HS?
1948
What is the equation for torque applied at an angle?
T= FrsinTheta
Calculate the torque applied by a mechanic using a 0.3 m wrench with a 50 N force.
1.5
A 20 N force is applied 2 m from a pivot. How much force must be applied 4 m from the pivot on the opposite side to balance it?
10 N
What is the general equation for force?
F=ma
The current capital of Georgia is Atlanta. It is the 5th time the capital city has changed. What was Georgia's first capital?
Savannah
This variable represents the lever arm
r
A 20 N force is applied 4 m from a pivot at 30°. What is the torque?
40 N*m
A 5 m beam is supported at the center. A 30 N weight is placed 2 m to the left. Where must a 20 N weight be placed on the right to balance?
r = 3 m
How do you calculate efficiency?
Eff. = (output/input) x 100
What is my cat's name?
Mochi
What does θ represent in the torque equation?
The angle between the force vector and the lever arm.
A beam has a 40 N force applied 300 cm from the pivot at 45°. What is the torque?
84.8 N*m
A 10 m beam is pivoted at the center. A 50 N force acts 3 m left of the pivot at 90°. A 30 N force acts 4 m right at 90°. Is the beam in equilibrium?
Left torque: (3)(50)=150
Right torque:(4)(30)=120
Net torque = 30 N·m (not zero)
No, it is NOT in equilibrium.
Which of Newton's laws states: "The acceleration of a moving object depends upon its mass and the force acting on it.
2nd
What is the little plastic at the end of a shoelace/hoodie string called?
Aglet