Instructor: Hai-Ping Cheng TA: Rashid Hamdan
PHYSICS DEPARTMENT
PHY 2004 Exam 1 February 1, 2013
Name (print, last first):
Signature:
On my honor, I have neither given nor received unauthorized aid on this examination.
YOUR TEST NUMBER IS THE 5-DIGIT NUMBER AT THE TOP OF EACH PAGE.
DIRECTIONS
(1) Code your test number on your answer sheet (use 76-80 for the 5-digit number). Code your name
on your answer sheet. DARKEN CIRCLES COMPLETELY. Code your student number on your
answer sheet.
(2) Print your name on this sheet and sign it also.
(3) Do all scratch work anywhere on this exam that you like. At the end of the test, this exam printout
is to be turned in. No credit will be given without both answer sheet and printout with scratch work
most questions demand.
(4) Blacken the circle of your intended answer completely, using a #2 pencil or blue or black ink. Do
not make any stray marks or the answer sheet may not read properly.
(5) The answers are rounded off. Choose the closest to exact. There is no penalty for guessing.
Fist answer is the correct answer
1- A man accelerates a 15.0 kg lawnmower uniformly from rest to 1.2 m/s in 2.0 s. The coefficient of kinetic
friction is 0.25. Calculate the horizontal applied force acting on the lawnmower.
(1) 46 N
(2) 56 N
(3) 4.6 N
(4) 5.6 N
(5) 460 N
2- The pulleys in the figure are frictionless with negligible weight. If w1 = 150 N, what is the value of w2 in
Newton for the system to be in equilibrium
(1) 300 N
(2) 150 N
(3) 200 N
(4) 75 N
(5) 400 N
3- Find the angle Θ1 (in degrees)
(1)
(2)
(3)
(4)
(5)
35
40
20
45
30
4- The radius of the planet Venus is nearly the same as that of the Earth, but its mass is only 0.8 as that
of the earth. If an object weighs 120 N on the surface of the Earth, what is its weight on Venus? (in
Newton)
(1) 96
(2) 120
(3) 100
(4) 150
(5) 84
4.4 Kg
5- The static coefficient friction between the table and the box is 0.4.
How much water can we add to bucket before it starts moving? (in
kg)
(1) 1.64
(4) 1.52
(2) 1.76
(5) 2.21
(3) 0.12
120 g
6- Which of the following equations is correct?
(1)
(2)
(3)
(4)
(5)
A+B=C+D
A+B=C-D
A-B=C-D
A+B+C+D=0
None of the above
7. How large must the tension labeled P be if the system is to hang as shown in the figure? (in Newton)
(1)
(2)
(3)
(4)
(5)
200
150
30
320
100
30
30
P
200N
9. A ball is thrown at 2 m/s horizontally. It lands 20 m away
from the starting point. What is h (in m)?
(1)
(2)
(3)
(4)
(5)
490.0
980.0
80.0
2.3
240.0
vo = 2 m / s
h
20 m