PHYS1110: Quiz 1
1. Consider a straight line in the x-y plane which passes through the point (2, 3) and
perpendicular to a vector = 2 + 4. (a) (15 marks) Show that the equation for
the straight line is given by
PHYS1110 Engineering Physics: Mechanics & Thermodynamics
Quiz 2
Nov 2015
Marking Scheme
1.
A ball with mass m suspended on the massless wire is released from height h and
collides elastically with a block of mass 2m at rest on a frictionless surface. Afte
PHYS 1110 Engineering Physics I
Homework 7
Due-date:
Nov., 2015 (before 5:30pm). The suggested solution will be released on
24th Nov. 2015 (Tue) 5:30 pm .
20th
Submit your homework to the PHYS1110 homework-collection box (Science Center,
North Block, Rm 2
PHYS 1110 Engineering Physics I
Homework 8
Due-date: 26 November, 2015 (Thurs, before 5:30pm). 30 November, 2015 (Mon,
before 5.30pm)
The suggested solution will be released on 1st December 2015 (Tue) 5:30 pm.
th
Submit your homework to the PHYS1110 homew
PHYS 1110 Engineering Physics I
Homework 8 solutions
1. A 2 kg mass connected with a spring (k = 100 N/m) undergoes simple harmonic
motion. At t = 1 sec, the position and velocity of the mass are 0.129 m and 3.415 m/s,
respectively. What is the amplitude
PHYS 1110
Assignment 6
Date: 09 Nov 2015 (Mon)
Suggested Solutions
1.
Initially the angular momentum of the system consisting of the cat (at r = R2) and
the ring is:
M
1
7
2
0 R2 M R12 R22 0 MR220 .
4
2
8
Li
(4 marks)
After the cat has crawled to the inn
PHYS1110
Problem set 5 (suggested solutions)
1.
(a) Let t1 = time for the first revolution
Time for the second revolution: t2 = t1 + 0.750 s
1
2
1 = 2 rad = 2 1
2 = 4 rad =
1
2
(Eq.1)
(Eq.2)
2
2
(4 marks)
(4 marks)
2 = 21
(Eq.2)/(Eq.1)
1 + 0.750 = 21
1
Suggested solutions to HW #3
1. (a) As the body moves along the x axis from xi = 3.0 m to xf = 4.0 m the work done by the
spring force is
xf
xf
k
W Fx dx kx dx ( x 2 xi2 ) (6 points)
f
xi
xi
2
According to the work-kinetic energy theorem, this gives the c
PHYS 1110
Assignment 6
Due-date: 05 Nov 2015 (Thu)
(Before 5:30 pm)
The suggested solution will be released on 09 Nov 2015 (Mon), 5:30 pm
Please submit your homework (supposed to be a hardcopy) to the assignment box
located outside SC 213 (Science Centre