A girl was wearing a set of earings made of the line segments, semicircular arcs and arcs of quadrant of cricles as shown in the figure. Calculate total length of the metal wire required to make a set of ear rings

A hand fan is made up of cloth fixed in between the metallic wires. it is in the shape of a sector of a circle of radius 21cm anf of angle 120^@ as shown in the figure. calculate the area of the cloth used and also find the total length of the metallic wire required to make such a fan.

A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire is also used in making 5 diameters which divide the circle into 10 equal sectors as shown in the given figure. Find The total length of the silver wire required. (Use pi = (22)/(7) )

A straight wire carrying a current of 12A is bent into a semicircular arc of radius 2*0cm as shown in figure. Consider the magnetic field vecB at the centre of arc. (a) What is the magnetic field due to the staight segments? (b) In what way the contribution to vecB from the semicircle differs from that of a circular loop and in what way does it resemble? (c) Would your answer be different if the wire were bent into a semicircle arc of the same radius but in the opposite way as shown in figure

A uniform semicircular ring of mass m and radius r is hinged at end A so that it can rotate freely about end A in the vertical plane as shown in the figure. Calculate angle made by line AB with vertical in equilibrium position and time period of small oscillation of ring.

A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire is also used in making 5 diameters which divide the circle into 10 equal sectors as shown in Fig. 12.12. Find : (i) the total length of the silver wire required. (ii) the area of each sector of the brooch.

A brooch is made with silver wire in the form of a circle with diameter 35 mm.The wire is also used in making 5 diameters which divide the circle into 10 equal sectors as shown in Fig. 12.12. Find : (i) the total length of the silver wire required, (ii) the area of each sector of the brooch.

A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire also used in making 5 diameters which divide the circle into 10 equal sectors as shown in Fig. 15.16. Find: (i) the total length of the silver wire required (ii) the area of each sector of the brooch.

A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire also used in making 5 diameters which divide the circle into 10 equal sectors as shown in Fig. 15.16. Find: (i) the total length of the silver wire required (ii) the area of each sector of the brooch.