Latihan PAS Physics

Question 1

These are some statements about the
advantages of simple machines, except…
A. Decreasing effort
B. Efficiency in time
C. Makes our work become easy to be done
D. To move an object with a large energy

Answer 1

D. To move an object with a large energy

Question 2

The incorrect statement about the character of
the simple machines ( LEVER ) is…
A. It has mechanical advantage
B. It has load, pivot and effort
C. The type of lever depend on composition (
sequence ) of pivot and effort without load
D. Mechanical advantage is comparison
between load and effort

Answer 2

C. The type of lever depend on composition (

sequence ) of pivot and effort without load

Question 3

The magnitude of Mechanical Advantage ( MA )
of lever become larger if…
A. Load arm ( LA ) is bigger than Effort Arm (
EA )
B. Load arm ( LA ) is equal with Efoort Arm (
EA )
C. Effort is bigger than load
D. Effort Arm ( EA ) is bigger than Load Arm (
LA )

Answer 3

D. Effort Arm ( EA ) is bigger than Load Arm (

LA )

Question 4

The right composition for a paper hole puncher is…

Answer 4

force – load – pivot

Question 5

The example of first class ( type 1 ) of lever is…

Answer 5

scissor

Question 6

The example of second class ( type 2 ) of lever is…

Answer 6

crab opener

Question 7

The load with 60 kg of mass is moved by using
a lever with 200 N of force. Gravitational
acceleration g = 10 m/s 2 .
If the distance between load to pivot is 30 cm,
the total length of lever is…

Answer 7

1,2

Question 8

A piece of wood with 1,8 m of length is used as
a lever to elevate a stone. The distance between
force to pivot is 140 cm. If effort to elevate the
stone is 120 N then the weight of load is…

Answer 8

420 N

Question 9

These are some correct statements according to
physics principle of work done, except…
A. There is a constant force exerted on object
B. There is displacement of object
C. Acceleration of object does not happen
D. Energy transferred during work done occured

Answer 9

C. Acceleration of object does not happen

Question 10

When somebody pulls the table on a frictionless
floor and finally position of the table changed….
A. Work done happens and it transforms into
potential energy
B. Work done happens and it transforms into
kinetic energy
C. Work done does not happen
D. Work done happens and it transform into
potential elactic energy

Answer 10

B. Work done happens and it transforms into

kinetic energy

Question 11

When the athlete is trying to hold the barbell
above his head for a several seconds…
A. Work done occurred because he is trying to
against the weight
B. No work done occurred because barbell does
not move anymore
C. No work done because no force
D. Work done occurred because force parallel
with displacement of barbell

Answer 11

B. No work done occurred because barbell does

not move anymore

Question 12

Work done become zero if these conditions are
fulfilled, except..
A. There is no force acted
B. No displacement ( change of distance )
occurred
C. Direction of force parallel with direction of
displacement
D. Direction of force perpendicular to direction of
displacement

Answer 12

C. Direction of force parallel with direction of

displacement

Question 13

A man pushed a cupboard with 40 N of force
on a smooth floor ( frictionless ). The cupboard
moved 150 cm from its original position.
Work done in this case is….

Answer 13

60 J

Question 14

An object with 4 kg of mass in stationary
condition ( diam ), suddenly moves with 5 m/s of
speed because a force acting on it. If a work
done is changed into kinetic energy what is its
magnitude ?

Answer 14

10 J

Question 15

An object ( with 4 kg of mass ) has initial
position at 2 m from the ground. A force can
elevate its height to 8 m from the ground.
If gravitational acceleration g = 10 m/s2
the

work done for this situation is…

Answer 15

120 J