Related Questions

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 $$\frac{{2{\text{L}}}}{3}$$
When the body is suspended at the point of suspension, its periodic time and frequency will be ________ as compared to the body suspended at the point of percussion.
A Same
B Two times
C Four times
D None of these
If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be
A Maximum
B Minimum
C Zero
D Infinity
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
Center of percussion is
A The point of C.G.
B The point of metacenter
C The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
D Point of suspension
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 $$\frac{{3{\text{r}}}}{2}$$
The velocity of piston in a reciprocating steam engine is given by (where $$\omega $$ = Angular velocity of crank, r = Radius of crank pin circle, $$\theta $$ = Angle turned by crank from inner dead center and n = Ratio of length of connecting rod to the radius of crank)
A $$\omega {\text{r}}\left( {\sin \theta + \frac{{\sin 2\theta }}{{\text{n}}}} \right)$$
B $$\omega {\text{r}}\left( {\cos\theta + \frac{{\cos2\theta }}{{\text{n}}}} \right)$$
C $${\omega ^2}{\text{r}}\left( {\sin \theta + \frac{{\sin 2\theta }}{{\text{n}}}} \right)$$
D $${\omega ^2}{\text{r}}\left( {\cos\theta + \frac{{\cos2\theta }}{{\text{n}}}} \right)$$
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
The centre 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 $$\frac{{3{\text{r}}}}{2}$$
Which of the following is a percussion instrument?
A Manjira
B Jhanjh
C Khartal
D All of these

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