Tec 114: Basic Mechanics Question Paper
Tec 114: Basic Mechanics
Course:Bachelor Of Electrical And Electronics Engineering
Institution: Moi University question papers
Exam Year:2012
TEC 114: CAT II
TIME: 1 HOUR
QUESTION ONE
a. A ball impinges on another directly which is twice its own mass and moving with one seventh of its velocity. If the coefficient of restitution between them is 0.75, show that the first ball after striking the second ball will remain at rest.
b. Moment of inertia in a rotating body is important in that it helps one to determine the torque required to accelerate a body about an axis. Derive an expression of moment of inertia of a thin uniform rod of mass M and length L rotated about the centre of mass.
QUESTION TWO
A heavy uniform beam rests with one end A upon a horizontal plane AC. The other end B rests on an inclined plane CB. It is kept in equilibrium by a string AC. If the inclination of the inclined plane to the horizontal is double that of the beam, find the tension of the string and reactions of the planes at A and B.
QUESTION THREE
a. What is simple harmonic motion?
b. A body of mass 2250 grams hangs from a string of length 900mm. Calculate the stiffness of a spring required to give the same period as a pendulum when carrying the same mass. What is the frequency of oscilation?
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