rotation and revolution

When a rigid body such as a merry-go-round rotates around an axis, each particle in the body moves in its own circle around that axis. Since the body is rigid, all particles make one revolution in the same amount of time. i.e., they all have the same angular speed w..

When a rigid body such as a merry-go-round rotates around an axis, each particle in the body moves in its own circle around that axis. Since the body is rigid, all particles make one revolution in the same amount of time. i.e., they all have the same angular speed w . ..

Find the surface area of revolution formed by rotating the curve x = t , y = t , 5 ≤ t ≤ 9 about the x -axis. => π 6 (37 3 7 - 2 1 2 1 ) square units or π 12 (37 3 7 - 2 1 2 1 ) square units or π 6 (21 2 1 - 3 7 3 7 ) square units or 2416π 3 square units or 2 3..

. Suppose the dancer is rotating with her legs and arms stretched outward and if she suddenly folds her arms and brings her stretched legs closer, thereby reducing the moment of inertia, her angular velocity increases due to conservation of angular momentum. An incredible shrinking of a s..

To measure an angle we shall use two kinds of units, the degree unit and the radian unit. A degree(Sexagesimal system) is defined to be an angle formed by half-line (or a ray) rotated about its end point (1/360) of a complete revolution. Types of Angles: Acute ..

. Thus a unidirectional current is produced in such a generator. The AC current produced in India has a frequency of 50 hertz (Hz). The coil is rotated at the rate of 50 revolutions in 1 second. So in 50 revolutions the current changes its direction 100 times in one se..

OR A degree is defined to be an angle formed by half-line (or a ray) rotated about its end point of a complete revolution. To denote degree measure we use the symbol ( o ), written just to the right of measure number of the angle. Thus 360 o = 1 complete rotation..

. If a ray rotates about the starting initial position, in anticlockwise direction, comes back to its original position after 1 complete revolution then it has rotated through 360 o . 1 complete rotation is divided into 360 equal parts. Each part is 1 o . Eac..

The above figure shows a body moving with uniform speed along a circle. Let perpendiculars be drawn from different positions of the body onto any diameter, say the vertical diame..