Engineering
Mechanics – Mid Exam III
Question Bank
1.
Distinguish
between Statics and Dynamics?
2.
Distinguish
between Kinematics and Kinetics?
3.
Explain
types of motion with suitable examples?
4.
State
equations of motion?
5.
State
D’Alembert’s principle?
6.
State
the Work-Energy principle?
7.
When
is the work done upon a body is positive and when it is negative?
8.
Define
Virtual Displacement and Virtual Work?
9.
State
the Principle of Virtual Work?
10.
State
the advantages of Virtual Work Method over Method of Equilibrium Equations?
11.
The
position of a particle in rectilinear motion is defined by x=5t3-9t2+4t-2
where x is in metres and t is in seconds. Determine its
position, velocity and acceleration at time t=5s
12.
An
airplane while landing touches the runway with a speed of 120 kmph and
reaccelerates at a constant rate of 2m/s2. to 1 kmph. Determine
i). the time taken to decelerate ii) the distance travelled during this time?
13.
A
car moving at 50 kmph accelerates uniformly at the rate of 1m/s2 for
the next 15seconds. Determine the velocity after 15seconds?
14.
A
ball is thrown upwards with a velocity of 15m/s. Determine i). maximum height
reached by the ball ii) the time taken to reach it
15.
A
ball is thrown from the ground with a velocity of 8m/s at an angle of 300
to the horizontal. Determine i) total time of flight ii) maximum height reached
iii) range of the ball
16.
A
missile is fired with an angle of an initial velocity of 50m/s to hit a target
that is 250m away on a level ground. What should be the angle of projection?
17.
A
block of 15 kg mass rests on a rough horizontal surface whose coefficient of
kinetic friction is 0.3. it is pulled by a constant force of 60 N inclined at
300 to the horizontal. Determine Velocity and Distance travelled by
the block after 5 seconds.
18.
A
car of 5 ton mass is moving at a constant speed of 50 kmph. What is the braking
force required to bring the car to a stop in a distance of 250m? also determine
the time taken to bring the car to stop.
19.
A
bus of 4 ton mass moving at 50 kmph is stopped by applying brakes in a distance
of 60m. determine the braking force?
20.
Find
the work done by the force of gravity on a body of 6 kg mass as it falls
vertically downwards through a distance of 5m?
and
Problems on Virtual Work (Simply Supported Beam with point load)
and
Problems on Virtual Work (Simply Supported Beam with point load)
