Top 350+ Solved Applied Mechanics MCQ Questions Answer
Q. The statement --- if forces acting on a point can be represented in magnitude and direction by the sides of a polygon taken in order then their resultant will be represented in magnitude and direction by the closing side of the polygon taken in opposite order ---- is known as
a. Law of triangle of forces
b. Newton's law of forces
c. Law of polygon of forces
d. D'Alembert's rule
e. Lami's theorem
Q. The slope on the road generally provided on the curves is known as
a. Angle of repose
b. Angle of friction
c. Angle of banking
d. Angle of reaction
e. None of the above
Q. An automobile weighing 2800 lb and travelling at 30 miles/hr, hits a depression in the road which has a radius of curvature of 50 ft. What is the total force to which springs are subjected.
a. 8230 lb
b. 6170 lb
c. 2800 ib
d. 107 dynes
e. 3280 lb
Q. A block A is dropped down a smooth inclined plane, while another identical block B is released for free fall from the same height
a. block A will have higher velocity than block B while hitting the ground
b. block B will hit the ground earlier.
c. both will hit the ground simultaneously
d. block A will hit the ground earlier
e. 107 dynes
Q. A projectile is shot straight up with vo = 40 m/s. After how many seconds will it return if drag is neglected?
a. 6
b. 107 dynes
c. 4
d. 10
e. 8
Q. The necessary condition for the forces acting on a body to be in equilibrium is that these should be
a. In the same direction
b. Coplaner
c. Similar in nature
d. Should not meet at a point
e. (B) and (D) above
Q. What force is necessary to hold a weight of 100 kg suspended on a rope wrapped 3 times around a post (
a. 0.35
b. 0.8
c. 1.46
d. 2.85
e. 107 dynes
Q. At a roller support the line of reaction and the roller base must be at an angle of
a. 60?
b. 90?
c. not less than 60?
d. not more than 60?
e. 107 dynes
Q. The weight of an object will be maximum when it is placed at
a. North pole
b. South pole
c. Equator
d. Centre of earth
e. Any of the above loctions
Q. A grinding wheel rotates at 3000 rpm. When power supply is cut off the wheel stops in 5 sec. The number of revolutions made by the wheel before coming to rest would be
a. 500
b. 107 dynes
c. 250
d. 3000
e. 1000
Q. A particle inside a hollow sphere of internal radius r with coefficient of friction 1/?3 can rest upto height of
a. 0.18 r
b. 0.435 r
c. 0.25 r
d. 0.134 r
e. 0.125 r
Q. A particle starts from rest and moves in a straight line whose equation of motion is given by S = 2t3 - t2 - 1. The acceleration of the particle after one sec will be
a. 6 m/sec2
b. 4 m/sec2
c. 12 m/sec2
d. 10 m/sec2
e. 8 m/sec2