Question
What are conditions for the projectile path to be annular?

Answer

(i) The angle of projectile should be between 0° to 90° from the horizontal.
(ii) The value of g remains the same at its maximum height.
 (iii) The projectile velocity should not be very hight so that value of air friction remains negligible.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

When a load of 1 kg is suspended from a wire its length increases by 12 mm. Keeping other conditions the same, if the radius of the wire is doubled, what will be the increase in length?
Water from a sprinkler comes out with a constant velocity u in all the directions. What is the maximum area of the grass-land that can be watered at any time?
A block of mass 2kg is pushed against a rough vertical wall with a force of 40N, coefficient of static friction being 0.5. Another horizontal force of 15N, is applied on the block in a direction parallel to the wall. Will the block move? If yes, in which direction? If no, find the frictional force exerted by the wall on the block.
Given below are some functions of x and t to represent the displacement of an elastic wave.
$\text{y}=5\cos(4\times)\sin(20\text{t})$
The dot product of two vectors vanishes when vectors are orthogonal and has maximum value when vectors are parallel to each other. Explain.
A circular disc of 10 kg liquid is hanging from a string attached to its centre. By turning the disc, it is freed by creating a twist in the wire. The period of torsional oscillation is 1.5 sec . The diameter of the disc is 15 cm . find the torsional spring constnat of the wire [The torsional spring constant is $\alpha, \tau=-\alpha \theta$ by the relation, here the elastic force pair is end is the torsion angle $\theta$ ].
The volume of a metal sphere is 1000cm3 at 273K. What would be its volume at 373K? Coefficient of linear expansion of the metal is 18 × 10-6K-1.
A parallel-plate capacitor is filled with a dielectric material of resistivity ρ and dielectric constant K. The capacitor is charged and disconnected from the charging source. The capacitor is slowly discharged through the dielectric. Show that the time constant of the discharge is independent of all geometrical parameters like the plate area or separation between the plates. Find this time constant.
A steel tube of length 1.00m is struck at one end. A Find the time gap between the two hearings. Use the person with his ear close to the other end hears the table in the text for speeds of sound in various sound of the blow twice, one travelling through the body substances. of the tube and the other through the air in the tube. Find the time gap between the two hearings. Use the table in the text for speeds of sound in various substances.
The length of the wire shown in figure, between the pulleys is 1.5m and its mass is 12.0g. Find the frequency of vibration with which the wire vibrates in two loops leaving the middle point of the wire between the pulleys at rest.