Related Questions

The center of gravity of a quadrant of a circle lies along its central radius (r) at a distance of
A 0.5 r
B 0.6 r
C 0.7 r
D 0.8 r
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.
A $$\frac{{3{\text{r}}}}{8}$$
B $$\frac{{4{\text{r}}}}{{3\pi }}$$
C $$\frac{{8{\text{r}}}}{3}$$
D $$\frac{{3{\text{r}}}}{{4\pi }}$$
The radius of circle A is r, and the radius of circle B is 3/4r. What is the ratio of the area of circle A to the area of circle B?
A 16 to 9
B 9 to 16
C 1 to 4
D 4 to 3
The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.
A $$\frac{{{I_{\text{G}}}}}{{{\text{A}}\overline {\text{x}} }}{\text{ below}}$$
B $$\frac{{{I_{\text{G}}}}}{{{\text{A}}\overline {\text{x}} }}{\text{ above}}$$
C $$\frac{{{\text{A}}\overline {\text{x}} }}{{{I_{\text{G}}}}}{\text{ below}}$$
D $$\frac{{{\text{A}}\overline {\text{x}} }}{{{I_{\text{G}}}}}{\text{ above}}$$
Radius of circle center 0 is 3 times the radius of circle center C. Angle ACB -A angle POQ. If the shaded are of circle C is 2 then what is the area of then shaded part of circleO?
A 36
B 9
C 12
D 18
The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity.
A Zero
B Minimum
C Maximum
D None of these
A chord of length 60 cm is at a distance of 16 cm from the centre of a circle. What is the radius (in cm) of the circle?
A 17
B 34
C 51
D 68
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
q মানের পাঁচটি ধনাত্নক চার্জ r ব্যাসার্ধের একটি বৃত্তের পরিধি বরাবর প্রতিসমভাবে সাজানো হলো। বৃত্তের কেন্দ্রে বৈদ্যুতিক ক্ষেত্রের মান কত? (Five positive charges of magnitude q are arranged symmetrically along the circumference of a circle of radius r. What is the magnitude of the electric field at the center of the circle?)
A q44πε0r2
B q54πε0r2
C 5q4πε0r2
The area of circle A is 6.25 sq. in. If radius of the circle is doubled, what is the new area of circle A in sq. in?
A 5 pi
B 12.5 pi
C 25 pi
D 39.0625 pi

Next steps