1) The document provides examples of physics problems involving forces, including the force of gravity on objects with different masses, the force of support on accelerating objects, and tension forces in inclined planes. 2) Sample problems are worked through step-by-step showing calculations for acceleration, velocity, and tensions in chains supporting an object. 3) Diagrams illustrate force diagrams with labels for different forces like gravity, applied force, friction, and tension in chains.

2. Know Definitions of Key
Terms & Symbols

3. Focus during the entire Power Point activity.
Solidify your studying skills during this
class period.
Perform your work in your science journal so
you have created a study guide for the test.
Call me over if you are having difficulty
getting started.
If your answer is confirmed as correct, become
a student/teacher and help someone in class
who does not understand the method used
to solve the problem.

4. Batfink, who has a mass of 75 kg is
placed in a 25 kg stationary barrel.
What is the Fg on Batfink and the
barrel?

5. SOLUTION:
Force of gravity on Batfink and the barrel.
mbf = 75 kg Fg
mb = 25 kg
g = -9.8 m/s2
Fg= -980 N

6. Batfink and the barrel are raised at
1.1 m/s2. What is the force of
support acting on Batfink and the
Barrel?

7. SOLUTION:
Force of support on Batfink and the barrel.
mbf = 75 kg Fs
mb = 25 kg
g = -9.8 m/s2
a = 1.1 m/s2
Fs= 1090 N

8. Suddenly, Batfink and the
barrel are lowered at 1.1
m/s . What is the force of
2
support acting on Batfink
and the Barrel?

9. SOLUTION:
Force of support on Batfink and the barrel.
mbf = 75 kg Fs
mb = 25 kg
g = -9.8 m/s2
a = -1.1 m/s2
Fs= 870 N

10. Hugo Ago-go pushes the barrel with
Batfink in it towards the end of the
cliff with a 100 N force over a
distance of 10 m before the barrel
leaves the cliff. The force of friction
is 8 N. Draw a force diagram of the
situation.

11. y
Fs 980 N
Ff - 8 N Fa 100 N x
Fg -980 N

12. Calculate the acceleration
of the barrel in the x
axis.

13. SOLUTION:
Acceleration of Batfink and the barrel.
mbf = 75 kg a
mb = 25 kg
g = -9.8 m/s2
Fa = 100 N
Ff = 8 N
Xi = 0 m
X = 10 m a = 0.92 m/s2

14. What is the Vf of the
barrel just before it falls
off the cliff?

15. SOLUTION:
Final velocity of Batfink and the barrel.
Vi = 0 m/s Vf
a = 0.92 m/s2 tf
Xi = 0 m
Xf = 10 m
Ti = 0 s
V = 4.29 m/s

16. The Incredible Hulk is hanging motionless off
the ground by chains attached separately to
his wrists from two different walls. The Hulk
has a mass of 355 kg. The
chain on his right wrist
(T1) forms an angle of 26˚
relative to the floor, and the
chain from his left wrist (T 2)
forms an angle of 32˚ relative to
the floor. T2 has 2500 N acting
on it. Draw a force diagram
of the situation.

17. y
T1
T2 = 2500 N
26° 32°
Fg -3479 N

18. Determine the tension in T2X.

19. SOLUTION:
Tension in chain #1. First find T2x.
T2 = 2500 N T2x
θ = 32°
m = 355 kg
g = -9.8 m/s2
Fg = -3479 N
T2x = 2120 N

20. SOLUTION:
Tension in chain #1.
T2 = 2500 N T1
θ = 32°
m = 355 kg
g = -9.8 m/s2
Fg = -3479 N
T2x = 2120 N T1 = 2358.2 N