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Concept Torque & Simple Machines Individual

Total questions: 20

Worksheet time: 5hrs 0mins

Name
Class
Date
1.
When on a bike going uphill, what happens to the speed and torque?
a)
Speed decreases; torques increases
b)
Speed decreases; torques decreases
c)
Speed increases; torques decreases
d)
Speed increases; torques increases
2.

On a Ferris wheel, what happens to the speed and torque from the control panel motor to the gear attached to the ferris wheel is turned on to rotate?

a)

Speed decreases; torques increases

b)

Speed decreases; torques decreases

c)

Speed increases; torques decreases

d)

Speed increases; torques increases

3.
When on a bike going downhill, what happens to the speed and torque?
a)
Speed decreases; torques increases
b)
Speed decreases; torques decreases
c)
Speed increases; torques decreases
d)
Speed increases; torques increases
4.
If the small gear is driving the large gear, what is happening to the torque on the large gear?
a)
Increase
b)
Decrease
c)
Remains constant
d)
Not enough information
5.
What axis must intersect to find the center of mass?
a)
X & Y
b)
X & Y & Z
c)
Y & Z
d)
none of the above
6.

Find the magnitude of the torque formula if produced by a 22.0 N force applied to a door at a 30 degree from the perpendicular distance of .005 km from the hinge.

a)

T=Frsin𝞡

b)

T=Frcos𝞡

c)

Tnet=0

d)

T/r=F

7.

If the torque required to loosen a nut on the wheel of a car has a magnitude of 60.0 N• m, what minimum perpendicular force formula must be exerted by a mechanic at the end of a 45.0 cm wrench to loosen the nut?

a)

T/F=r

b)

T/r=F

c)

T=Fr

d)

Tnet=0

8.

A state of equilibrium is also seen below. Each of the cars weighs the same 9800 N. Despite the fact that there is only one car on the left-hand side that is 9 m from the fulcrum, the moments balance because, the car on the left-hand side, is ____meters from the fulcrum, compared to the cars on the right-hand side. Set up the Tnet formula for this situation:

a)

Tnet= +T1 -T2=0

b)

Tnet= -T1 -T2=0

c)

Tnet= -T1 +T2=0

d)

Tnet= +T1 -T2=1

9.
When speed increases, what happens to the value of motor load torque?
a)
increases
b)
decreases
c)
stays constant
10.
Where does the center of mass need to be ____ compared to the support area?
a)
above
b)
below
c)
same height
d)
none of the above
11.
What is an example of a 3rd class lever?
a)
nut cracker
b)
fishing pole
c)
scissors
d)
car door
12.
Compare the Moment of Inertia I) of the Red hollow sphere to Gold solid sphere to the Green hollow cylinder to the Blue solid cylinder from least resistance to angular acceleration to greatest resistance...
a)
Ired<Iblue<Igold<Igreen
b)
Igold<Iblue<Ired<Igreen
c)
Iblue<Ired<Igreen<Igold
d)
<IgreenIred<Iblue<Igold
13.

The distance is increased to reduce effort force if...

a)

MA<1

b)

MA=1

c)

MA>1

d)

all of the above

14.
The output force is less than input force applied ie. class 3 levers...
a)
MA<1
b)
MA=1
c)
MA>1
d)
all of the above
15.
What is an example of a 2nd class lever?
a)
scissors
b)
wheel barrel
c)
bat
d)
fishing pole
16.
What is an example of a 1st class lever?
a)
broom
b)
tweezers
c)
wheel barrel
d)
scissors
17.
The direction is  changed if...
a)
MA<1
b)
MA=1
c)
MA>1
d)
all of the above
18.

Find the distance formula of the torque 3.25 Nm produced by a 5.0 N force applied to a door at a perpendicular from the hinge.

a)

T/r=F

b)

T/F=r

c)

Tnet=0

d)

T=Fr

19.

What is the Tnet setup formula to find a distance the masses on the right of the fulcrum need to be to balance with the two masses on the left?

a)

T/F=r

b)

T=Fr

c)

Tnet= +T1 +T2 -T3=0

d)

Tnet=1

20.

When speed decreases, what happens to the value of torque?

a)

increases

b)

decreases

c)

stays constant