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Assignment 2: (Spring 2014)
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.
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be accepted through email).
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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
. 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
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 s
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: 5
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
(a) the hammerhead
(b) the nail Marks = 6
::::::::::::::::::::::::::: Wish you good luck::::::::::::::::::::::
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