In: Mechanical Engineering

In the planetary gear train shown in Figure Q2, the annulus A rotates at 300 rpm about the axis of fixed wheel S which has 80 teeth. The armed spider (arm) is driven at 180 rpm. The annulus is connected to input shaft whereas the arm is connected to the output shaft. If the efficiency of gear system is 98% and input torque is 100 Nm, identify the following information regarding these problems (i) The number of teeth on planet gear, P (ii) Holding torque for fixed wheel (iii) Power transmitted by the gear train.

Q1 The crank of a slider mechanism rotates clockwise at a
constant speed of 300 rpm. The crank is 15Q mm and the connecting
rod is 60P mm long. Determine: a) Linear velocity and acceleration
of the Slider. b) Angular velocity and angular
acceleration of the connecting rod, at a crank angle of 45° from
inner dead centre position.

A train travels between stations 1 and 2, as shown in the
figure. The engineer of the train is instructed to start from rest
at station 1 and accelerate uniformly between points A and B, then
coast with a uniform velocity between points B and C, and finally
decelerate uniformly between points C and D until the train stops
at station 2. The distances AB, BC, and CD are all equal, and it
takes 5.63 min to travel between the...

(a) Using the root locus plot shown in figure Q2 (a),
find the system damped natural frequency ( d)
when the system is marginally stable, then find the maximum gain
for stable system.
[5 Marks ]
(b) Using the Root locus plot shown in figure Q2 (a), determine the
open loop transfer function.
[ 5 Marks ]
Figure Q2 (a) open-loop Transfer function Root Locus Plot
(c) G(s) is an open loop system transfer functions that include an
adjustable gain...

Three charge particles are shown in the figure below,
Q1=-11 nC (-3.50cm,0), Q2=3 nC (0,0)
andQ3=7 nC (1.50cm, 0).
all at x axis
A) Find the magnitude of net force acting on Q1 .
What is the direction of this net force?
B) Find the magnitude of net force acting on Q3. What
is the direction of this net force?

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