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Terms in this set (27)
What does greater torque mean?
Greater torque means that the force applied is very effective in causing rotational motion
What does lesser torque mean?
Less tendency for the force applied to cause a rotational motion
What is a lever arm/moment arm?
The perpendicular distance between the action of a force applied to an object and the axis of rotation of the object
What are the units for torque?
N-m or ft-lb
How to calculate torque?
It is typically Force times level arm (l):
F*l
If it makes an angle:
Frsin(theta)
F*l
If it makes an angle:
Frsin(theta)
T/F : Torque is measured about a point
True
How do we define torque about a specific point?
Either say :
"torque of F with respect to point x"
OR
"torque of F about point x"
"torque of F with respect to point x"
OR
"torque of F about point x"
What is net torque equal to?
moment of Inertia*angular acceleration:
I*alpha
I*alpha
Velocity for Rolling withing slipping
V_cm = R*w
KE for rotational and translational motion
KE = (1/2)M(v_cm)^2 + (1/2)I_cm(w^2)
What is the work done by torque?
W = τ_z(theta_2 - theta_1)
dW = F_tan(R)*dtheta
* derivative of work is equal to tangential force times R times change in theta
* Keep in mind that Tangential Force times R is equal torque.
*You should also keep in mind of the info presented in this card
* Keep in mind that Tangential Force times R is equal torque.
*You should also keep in mind of the info presented in this card
How does total work equal to rotational motion
W_tot = (1/2)I(w_2)^2 - (1/2)I(w_1)^2
How does power relate to torque?
P = torque * angular velocity
What is the derivative of work?
Power; it is the rate of doing work