Related Questions

The center of percussion of a solid cylinder of radius ‘r’ resting on a horizontal plane will be
A $$\frac{{\text{r}}}{2}$$
B $$\frac{{2{\text{r}}}}{3}$$
C $$\frac{{\text{r}}}{{\text{A}}}$$
D $$\frac{{3{\text{r}}}}{2}$$
A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will
A Remain horizontal
B Slant up towards direction of pull
C Slant down towards direction of pull
D None of the above
The height of a cylinder is four times the radius of the cylinder. If the volume of the cylinder is 256 cm², what is the radius of the cylinder.
A 4 cm
B 8 cm
C 16 cm
D 24 cm
The centre of percussion is below the centre of gravity of the body and is at a distance equal to
A h / kG
B h.kG
C h2/kG
D k2G/h
A solid cone of height 36 cm and radius of base 9 cm is melted to form a solid cylinder of radius 9 cm and height 9 cm. What percent of material is wasted this process?
A 25
B 5
C 0
D 10
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.
A Equal to
B Less than
C More than
D None of these
If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be
A Maximum
B Minimum
C Zero
D Infinity
The centre of percussion of the homogeneous rod of length ‘L’ suspended at the top will be
A $$\frac{{\text{L}}}{2}$$
B $$\frac{{\text{L}}}{3}$$
C $$\frac{{3{\text{L}}}}{4}$$
D $$\frac{{2{\text{L}}}}{3}$$
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)
A P = W tanα
B P = W tan (α + φ)
C P = W (sinα + μcosα)
D P = W (cosα + μsinα)
Plane P take off at 2:00 am and flies at a constants speed of Xmph. Plane Q takes off at 3:30 am and flies the same forte as plane p but travels at a constant X, how many hours after 3:30 am will plane Q overtake plan P?
A 1.5x/y +0.5
B 2
C 4
D 5

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