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# PHY101 Assignment no. 2 from 23-05-2014 to 26-05-2014

Assignment 2: (Spring 2014)
PHYSICS (PHY101)
TOTAL MARKS: 30
Due Date: 26/05/2014
DON’T MISS THESE Important instructions:
To solve this assignment, you should have good command over first 16 lectures.
Upload assignments (Microsoft word) properly through LMS, (No Assignment will
be accepted through email).
Write your ID on the top of your solution file.
All  students  are  directed  to  use  the  font  and  style  of  text  as  is  used  in  this
document.
Don’t use colorful back grounds in your solution files.
Use Math Type or Equation Editor etc for mathematical symbols.
Write  to  the  point  and  avoid  from  unnecessary  explanation.  Don’t  copy/paste
from internet or any other source.
This is not a group assignment, it  is an individual assignment so be careful and
avoid  copying  others’  work.  If  some  assignment  is  found  to  be  copy  of  some
other,  both  will  be  awarded  zero  marks.  It  also  suggests  you  to  keep  your
assignment safe from others. No excuse will be accepted by anyone if found to
be copying or letting others copy.
Don’t wait for the last date to submit your assignment.
Question. No: 1
A  lift  is  filled  with  patients  has  a  total  mass  of  2055  kg.  As  the  lift  begins  to  go  up,  the
acceleration  is 0.75 m/s
2
. What is the tension in  the  rope  that is lifting the  lift?  Validate  your
solution as well.  Marks 5
Question. No: 2
A man pushes a lawnmower with a force of 170 N at an angle of 37° down from the horizontal.
The lawn is 12.0 m wide and requires 16 complete trips across and back. How much work does
he do?    Marks 6

Assignment 2: (Spring 2014)
Question. No: 3
A bus’s tire rotates at an initial angular speed of 20.5 rad/s. The driver accelerates, and after 4.5
the tire’s angular speed is 29.0 rad/s.  What is  the tire’s average angular acceleration during the
4.5 s time interval?  Marks 7
Question. No: 4
An object’s momentum depends upon the object’s
a)  mass, speed and acceleration.
b)  mass, speed and direction of motion.
c)  speed and acceleration.
d)  velocity and direction of motion.
e)  mass and acceleration.
Write the reason of your above selected choice as well.  Marks 3+3 = 6
Question. No: 4
You drive a nail horizontally into a wall, using a 0.52 kg hammerhead. If the hammerhead is
moving horizontally at 4.5 m/s and in one blow drives the nail into the wall a distance of 2.9 cm,
determine the average force acting on
(b) the nail        Marks = 6
::::::::::::::::::::::::::: Wish you good luck::::::::::::::::::::::

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### Replies to This Discussion

in question no 3 momentum depends on (b) and (d) option.according to p = mv

phy101 assignment plzzzz???

want hint for last question plzzzz

yar koi to assignment solution do

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