Q.12: A block of mass m, = 2-kg is located at the crigin in the XY plane. When t = 0, a second block of mass m; = 3 kg, initially located at the point (-3, 4) m starts moving with a constant velacity: T = (31 + 6j) m/s. The X-coordinate (in meters) of the center of mass of the two blocks when t = 2 sec, is: A. 0.5 В. 9.0 С. 1.8 D. 3.0 E. Zero
Q.12: A block of mass m, = 2-kg is located at the crigin in the XY plane. When t = 0, a second block of mass m; = 3 kg, initially located at the point (-3, 4) m starts moving with a constant velacity: T = (31 + 6j) m/s. The X-coordinate (in meters) of the center of mass of the two blocks when t = 2 sec, is: A. 0.5 В. 9.0 С. 1.8 D. 3.0 E. Zero
Transcribed Image Text:aAprt f ma moi COte k ne une the h en batt during tchatof
eati t n hervative fottat uport when the particle mpletes anecle tietum
hato starting point toe 50 ko o mehnsa energ, the wore n loules) done by
he no ervative forte1ating on the partice during one cysle is
A 25
C- 75
100
QK The adjaient figure hows a mast m -0e that it attached to a tampresied spring ( -
*-with compresson dtance d-0!m The other end of the sping ia attacherd to alied wa
"he sprinE constart 5000 N/m, the peed (un m/s) of the mass when the spring returns to its
natural length (ie ng compression and no entension) is
A 15 8
B 20 3
C 28.7
D 38.2
E. 98
Q.9: The potential energy function for a two dimensional force is given by
U- (y-2y') aules.
The magnitude of the conservative force that is responsible for such potential when calculated at the
point (1, 2) m is:
A 3.6
B 9.8
C. 15.3
D. 24.2
E. 50.7
Q. 10. True or
depend on either the collision is elastic or inelastic".
A. True
"The law of conservation of total linear momentum of cclliding objects does not
B. False
Q.11: An object of mass m, = 2-kg moving to the right at 5 m/s strikes a stationary block (isits) in
a completely inelastic collision. Due to the collision, 60% of the initial kinetic energy is converted to
heat. The mass (in kg) of the stationary block is:
A. 0.25
6. 1.0
C. 5.0
D. 9.8
Е. 3.0
Q.12: A block of mass m, = 2-kg is located at the crigin in the XY plane. When t = 0, a second block of
mass m; = 3 kg, initially located at the point (-3, 4) m starts moving with a constant velocity:
I. = (3i + 6j) m/s.
The X-coordinate (in meters) of the center of mass of the two blocks when t = 2 sec, is:
A. 0.5
B. 9.0
С. 1,8
D. 3.0
E. Zero
Q.13: A disc of radius 0.25 m is initially rotating about an axis perpendicular to its plane and passing
through its center at 0.5 rad/sec and is accelerating at 0.2 rad/s. The distance a point located at 10
cm from the center of the disc moves in 20 sec is:
B. 5 m
C. 9.8 m
Q.14: A 2-kg particle moving horizontally with a speed of 5 m/s strikes (2) a vertical wall for
2 ms. It then rebounds () wvith the same speed. The magnitude of the average force (in kN)
A. 2 m
D. 12 m
E. 25 m
exerted on (k the particle by the wall is:
А. 2
В. 5
С. 10
D. 20
E. Zero
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