A wet open umbrella is held verticle and whirled about the handle at a uniform rate of 21 rev in 44 s. If the rim of the umbrella is a circle of 1 m in diameter and the hight of the rim above the floor is `4.9` m. The locus of the drop on the floor is a circle of radius

A wet open umbrella is held up right as shown in fig and is twirled about the handle at a uniform rate of 21 rev in 44s. If the rim of the umbrella is a circle k 1 m in diameter, and the height of the rim above thefloor is 1.5 m. The drops of water spun off the rim hit the floor at a distance x from theaxis. Find x.

A wet umbrella is held upright (see figure). The man holding it is rotating it about its vertical shaft at an angular speed of omega = 5 rad s^(–1) . The rim of the umbrella has a radius of r = 0.5 m and it is at a height of H = 1.8 m from the floor. The man holding the umbrella gradually increases the angular speed to make it 2 omega . Calculate the area of the floor that will get wet due to water drops spun off the rim and hitting the floor. [g = 10 m//s^(2)] .

Drops of water are thrown tangentially of the horizontal rim of a rotating wet umbrella. The rim is 3 ft in diameter and is held 4 ft above the ground and makes 14 revolutions in 33 seconds. Drops of water will meet the ground on a circle of diameter (in ft ).

A body of mass 0.4 kg is whirled in a vertical circle making 2 rev/sec. If the radius of the circle is 1.2 m, then tension in the string when the body is at the top of the circle, is

A body weighing 0.4kg is whirled in a verticle circle making 2rps If the radius of the circle is 1.2m find the tension in the stringat (i) top of the circle (ii) bottom of the circle .

A body weighing 0.4 kg is whirled in a vertical circle making 2 revolutions per second. If the radius of the circle is 1.2 m, find the tension in the string, when the body is (a) at the top of the circle (b) at the bottom of the circle. Given : g = 9.8 ms^(-2) and pi = 1.2 m

A particle is moving in a circle of radius R = 1m with constant speed v = 4 m/s. The ratio of the displacement to acceleration of the foot of the perpendicular drawn from the particle onto the diameter of the circle is

A wheel with 4 spokes is placed with its plane perpendicular to a uniform magnetic field B of magnitude 0.5 T. The field is directed into the plane of the paper and is present over the entire region of the wheel as shown in Fig. When the switch S is closed, there is initial current of 6 A between the axis and the rim and the wheel begins to rotate. Resistances of the spokes are 1, 2, 4 and 8 Omega , respectively. Resistance of rim is negligible. a. What is the direction of rotation of the wheel? b. Radius of the wheel is 0.2 m. Calculate initial torque acting on the wheel.