mass of 10 kg is attached to the spring in problem 8. The spring is compressed by 2 cm and is released. When the spring reaches its equilibrium position, what is the speed of the 10-kg mass? A) 1 m/s B) 1.7 m/s C) 2 m/s D) 2.7 m/s E) 3 m/s 3.3 + 1.S
mass of 10 kg is attached to the spring in problem 8. The spring is compressed by 2 cm and is released. When the spring reaches its equilibrium position, what is the speed of the 10-kg mass? A) 1 m/s B) 1.7 m/s C) 2 m/s D) 2.7 m/s E) 3 m/s 3.3 + 1.S
9 please by provided formula sheet easy way to explain please
Transcribed Image Text:v2
Circular motion: ac =
R
W
Pavr =
At
Fnet = ma;
Weight: Fg= mg, ;
g = 9.8 m/s²;
1
(Kinetic energy: K =
m v²;
Potential energy: Ug=mgy
E = Er
E = U+K
2
v2
Rotational motion:
e = -;
1 rev = 27 rad;
v = o r;
= o'r;
a = a r;
a, =
0 = 0o t+
2
@ = 0o + at;
20a = @? - @o?
K=-lo
T=rxF;
T=rFsino;
1 mR ?
1
Icy= mR2
Στ-Ια;
Ipoințmass = mr2
Idisk =
Ipipe =
mRout
+ Rin
1
2
Ired(end) = mL
2
Ishell =
mR?
Ihoop = mR?
Irod(center) =
-mL²
Ipall =
%3D
mR?
work: W=t0; K=-Io 2
dW
P =
dt
W
Pavr =
At
I= Icom + MD²
W =
2
Rolling:
2 +
1
m Vcom
Vcom = Ro
K=
-Io
T= f,R
F,max = H,Fn
Incline: F=mgsin0 F-mgcoso
Angular momentum:
Lpoint mass
= m rxv
L= mrvsin 0;
L=m (r,vy - ryVx)k
L= Io
LI = Lr
In 01 =I 202
m,X1 +m2X2
mıy1+m2y2
X com
У сom
m1 +m2
m1 +m2
12.25t 2,2 s
14.5
Transcribed Image Text:ven
7. A 2-kg object moving to the right with velocity 5 m/s collides with a 3-kg object which is initially at rest. After the
collision, the 3-kg object has a velocity vector v =i-j. What is the speed of the 2-kg object after the collision?
W. At
A) 0.8 m/s
B) 1.8 m/s
C) 2.8 m/s
D) 3.8 m/s
E) 4.8 m/s
8. Jf 15 J of potential energy are stored in a spring which has been compressed by 2 cm from its relaxed length, how much
force will this spring exert if it is stretched by 4 cm from its relaxed length?
A) 500 N
B) 3000 N
C) 7500 N
D) 75,000 N
E) None of the Above
mass of 10 kg is attached to the spring in problem 8. The spring is compressed by 2 cm and is released. When the
spring reaches its equilibrium position, what is the speed of the 10-kg mass?
A) 1 m/s
B) 1.7 m/s
C) 2 m/s
D) 2.7 m/s
E) 3 m/s
Om
I sp
3.3 + 1.S
10. A toy car is on a small indoor track, which is 100-m in circumference. The car starts from rest, accelerates uniformly,
and after 5 seconds reaches a point halfway around the circle. At this time, what is the magnitude of the car's
acceleration?
A) 4 m/s
B) 9 m/s
C) 16 m/s
D) 25 m/s
E) >25 m/s
11. A 2-kg block starts from rest at the top of a 10-m long ramp inclined at 45 deg to the horizontal. The block is released
and begins to slide down the ramp. At the bottom of the ramp the block has a speed of 9 m/s. What is the coefficient of
friction between the block and the ramp?
A) 0.12
B) 0.22
C) 0.32
D) 0.42
E) 0.52
12.25+ 225
14.5
4
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON