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WorksheetsConceptual Physics Rotational Motion
Total questions: 24
Worksheet time: 21mins
"Angle undergoes from a fixed reference line" this statement refer to
Average angular velocity, 𝝎_𝒂𝒗
Angular displacement,𝜽
Instantaneous angular velocity, 𝝎
angular acceleration
"Rate of change of angular displacement" this statement refer to
Angular displacement,𝜽
angular acceleration
Average angular velocity, 𝝎_𝒂𝒗
Instantaneous angular velocity, 𝝎
"Angular acceleration at a specified position or at a particular of time" this statement refer to
Average angular velocity, 𝝎_𝒂𝒗
Angular displacement,𝜽
Instantaneous angular acceleration, 𝜶
Instantaneous angular velocity, 𝝎
Torque is define as cross product between distance, r and __________
energy
velocity
force
displacement
When there is no external torque acting on a body moving in elliptical path, which of the following quantities remain constant
potential energy
linear momentum
angular momentum
A body with a definite shape that doesn't change is:
period
angular acceleration
rigid body
radius of gyration
If a system is in static equilibrium, it must have the following 2 conditions:
∑τ=0
Constant acceleration
∑F=0
Positive forces only
Conditions for equilibrium are:
1st condition: net force = 0
2nd condition:net torque = 0
Moving with constant velocity or Stationary/ rest
True
False
Below are the example of rigid body except:
Beam
Slab
Cement
Column
An object is moving with uniform speed in a counterclockwise, horizontal circle. Which of the following images correctly depicts the force vector and velocity vector at a point in time.
An ant of mass m clings to the rim of a flywheel of radius r, as shown above. The flywheel rotates clockwise on a horizontal shaft S with constant angular velocity 𝜔 . As the wheel rotates, the ant revolves past the stationary points I, II, III, and IV. The ant can adhere to the wheel with a force much greater than its own weight.
It will be most difficult for the ant to adhere to the wheel as it revolves past which of the four points?
I
II
III
IV
It will be equally difficult for the ant to adhere to the wheel at all points.
A gear spins at a rate of 400 revolutions/minute. Which choice is closest to its angular speed in radians/second?
63.67 rad/s
41.9 rad/s
3819.71 rad/s
2594.31rad/s
Condition for maximum torque is
θ = 90 degree
θ =180 degree
θ = 0 degree
not defined
Torque depends on
force
moment arm
mass
force and moment arm
Unit of torque is
Nm
J
N/m
Watt
The formula used to find a torque is...
(m)(g)
(F) cos(Ɵ)
(F)(r)
(m)(a)
All the forces rotating clockwise will have a _______ torque
positive
negative
Giving the following image, the force is...
counter clockwise (positive)
clockwise (negative)
Giving the following image, there are _____ forces acting on the sytem.
3 forces (weight 1, weight 2, and distance 2)
2 forces(weight 1 and weight 2)
1 force (weight 1)
1 force ( weight 2)
The moment of a 50 N force 20 cm away from the pivot point will be...
500 N
20 Nm
10 Nm
15 Nm
