Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Topic 4.3: Center of mass and levers

Total questions: 24

Worksheet time: 12mins

Name
Class
Date
1.
why is the car on the right more stable?
a)
Its centre of mass is higher
b)
it has a wider base
c)
it has more height
d)
all of the above
2.

A second class lever has what in the middle?

a)

Fulcrum

b)

Resistance

c)

Effort

3.

What are the most common types of levers in the human body?

a)

3rd class

b)

2nd class

c)

1st class

4.

How many classes of levers are there?

a)

1

b)

2

c)

3

d)

4

5.

You determine what class a lever is by the part that is in the middle.

a)

True

b)

False

6.

If the fulcrum is in the middle of the lever what class is it?

a)

1st

b)

2nd

c)

3rd

d)

4th

7.

If the effort is in the middle of the lever what class is it?

a)

1st

b)

2nd

c)

3rd

d)

4th

8.

If the load is in the middle of the lever what class of lever is it?

a)

1st

b)

2nd

c)

3rd

d)

4th

9.

What class of lever is shone in the picture?

a)

1st

b)

2nd

c)

3rd

d)

4th

10.

A lever is a rigid structure (bone/bar) that rotates around on an axis.

a)

True

b)

False

11.
Low center of gravity leads to more stability
a)
true
b)
false
c)
sometimes true -sometimes false
d)
does anyone REALLY know the answer to this kind of question?
12.

Where is the fulcrum for levers on the human body located?

a)

Muscles

b)

Bones

c)

Joints

d)

Ligaments

13.

You can improve stability by:

a)

Increasing Base of Support

b)

Increasing the mass of a body

c)

Lowering the Centre of Gravity

d)

Leaning forward

14.

For a first class level, the fulcrum is placed

a)

Between the effort/force and resistance/weight

b)

Effort/force in the middle with fulcrum on one end and resistance/weight on the other

c)

Resistance/weight in the middle with fulcrum and effort/force on the ends

15.

when the knee is flexed in preperation to kick a ball, what is acting as the resistance/weight?

a)

the knee

b)

the thigh

c)

the lower leg

d)

torso

16.

What lever is likened to a wheelbarrow?

a)

2nd class

b)

3rd class

c)

1st class

17.

when preparing to throw a javelin, the arm is straight behind the body. What muscle is acting as the effort/force

a)

wrist extensors

b)

tricep

c)

bicep

d)

deltoid

18.

What type of lever?

a)

1st Class

b)

2nd Class

c)

3rd Class

19.

What type of lever?

a)

1st Class

b)

2nd Class

c)

3rd Class

20.

What type of lever?

a)

1st Class

b)

2nd Class

c)

3rd Class

21.

What type of lever is shown with this triceps pressdown?

a)

1st Class

b)

2nd Class

c)

3rd Class

22.

Is this person's center of mass changing throughout this timelapse?

a)

Yes

b)

No

23.

Which is the technique that will raise ones body above their center of mass?

a)
b)
c)
d)
24.

What technique is being shown for the high jump

a)

Fosbury flop Technique

b)

Scissor Technique

c)

Flop Technique

d)

Straddle Technique