Download Aptitude Crack
img not found img not found

Applied Mechanics - Engineering

Q1:

A body A of mass 6.6 kg which is lying on a horizontal platform 4.5 m from its edge is connected to the end of a light string whose other end is supporting a body of mass 3.2 kg as shown in below figure. If the friction between the platform and the body A is 1/3, the acceleration is

A 0.5 m/sec2

B 0.75 m/sec2

C 1.00 m/sec2

D 1.25 m/sec2.

ANS:C - 1.00 m/sec2

a=g(m1- μm2)/(m1+m2)

So, m1= 6.6kg.
m2=3.2 kg.
g= 9.81 m/sec^2.
μ = 1/3.

So, by putting these values in the above equation I will get;
a= 5.53 m/sec^2.