16th February, 2010
Mechanics 1 (MEM110S): Test 1
Instruction: Answer ALL questions
Duration: 2 hours
QUESTION 1
[4]
The equation for Isaac Newton second law of motion is given by F = ma, where the
mass m is in kilograms (kg) and the acceleration a is in

MEM110X : ANGULAR MOTION
NAME
The spindrier of a washing machine accelerates uniformly from 10 r/min to 800r/min during 4 s.
Calculate:
1 the angular acceleration
2 the linear acceleration of a point 0,2 m from the centre of the spindrier.
3 the angular d

Experiment 2
VARIABLES IN FRICTION
PART 1: OBJECTIVE
To study the effect of variation of area of contact.
APPARATUS
In this part of the experiment use a slider for which the upper surface area is double the lower surface
area. The rest of the apparatus is

29th Feb 08
Mechanics 1: test
Time : 2 hours
( units; significant figures; conversions; forces; moments)
1.
2.
How many significant figures are there in the following?
(i) 100,2 (ii) 0,001
2
Answer either (a) or (b).
Either (a) Express the following in sc

Experiment 1A
RESULTANTS AND THE PARALLELOGRAM OF FORCES
OBJECTIVE
To check whether the parallelogram of forces can be used to find the resultant of two forces.
APPARATUS
Force board, weights, small metal or plastic ring, cord, pulleys, drawing-paper, Pre

Experiment 7
CENTROID OF A LAMINA
OBJECTIVE
To determine the position of the centroids of laminae of various shapes.
APPARATUS
Several regularly and irregularly shaped laminae, plumb bob and pins.
Finding the centroid of a lamina
METHOD
o
o
o
o
o
o
o
Pier

Experiment 3
ANGLE OF FRICTION
OBJECTIVE
To determine the angle of friction for various materials in contact, and to find the relation between angle
of friction and coefficient of friction.
APPARATUS
A plane as shown in fig , sliders with differing surfac

Experiment 1
THE LAWS OF FRICTION
PART 1: OBJECTIVE
To investigate the friction force between two surfaces at rest and in motion.
APPARATUS
Friction plane, slider, pulley, cord, weights, spring balance
Figure: Friction plane arrangement
METHOD
1. Place th

Experiment 8
INTRODUCTION
CENTROID OF A COMPOSITE LAMINA
The centroid of an irregularly shaped lamina can be found by calculation, considering the lamina to be
built up of several geometrically simple parts, each of which has an easily determined centre o

MEM'I 10X TUT TEST 6 23"d July 2010
FIRST NAME . SURNAME .
1.Two applied forces one of TSON which acts at an angle of 30 to the horizontai and one of 105 N act on an
object of weight 800 N as shown. The obteot stays at rest. FT = 750 N [8
30
FT=165N .