
Rotational Equilibrium

Quiz
•
Physics
•
12th Grade
•
Easy
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Used 19+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Torque can be described as
the ratio of mass to angular acceleration
None of the other answer
the ratio of moment of inertial to angular acceleration
how effectively a force causes a rotation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is torque calculated using the moment arm?
τ = Fr
τ = F/r
τ = r/F
τ = F + r
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The lever arm is the ________ distance from the axis of rotation to the point where the force is exerted.
perpendicular
angular
displaced
none of these
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The moment of a 50 N force 20 cm away from the pivot point will be.
10 Nm
500 Nm
20 Nm
15 Nm
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suppose a doorknob is placed at the center of a door. Compared with a door whose knob is located at the edge, what amount of force must be applied to this door to produce the torque needed to open it?
Four times as much
1/4 as much
1/2 as much
Twice as much
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A thin, 1 m-long rod has a 200 g object attached to the left end and a 300 g object attached to the right end. If the pivot point is in the middle of the rod, the object
Note: with negligible mass for the rod
will rotate clockwise
will be in static rotational equilibrium
is balanced
will rotate counter clockwise
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The easiest way to open a heavy door is by applying the force
At the edge of the door far from the hinges
At the top of the door
Near the hinges
In the middle of the door
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