CBSE Class 11 Liquid in Rest Worksheet C

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1. What will be the effect on horizontal range of a projectile when its initial velocity is doubled, keeping the angle of projection same?

2. What will be the effect on maximum height of a projectile when its angle of projection is changed from 30° to 60°, keeping the same initial velocity of projection?

3. What is the angular velocity of the hour hand of a clock?

4. A body is moving on a curved path with a constant speed. What is the nature of its acceleration?

5. A stone tied at the end of string is whirled in a circle. If the string breaks, the stone flies away tangentially. Why?

6. What are the two angles of projection of a projectile projected with velocity 30m/s, so that the horizontal range is 45m. Take, g = 10m/s².

7. The blades of an aeroplane propeller are rotating at the rate of 600 revolutions per minute. Calculate its angular velocity.

8. What is a uniform circular motion? Explain the terms time period, frequency and angular velocity. Establish relation between them.

9. A body of mass m is thrown with velocity 'v ' at angle of 30° to the horizontal and another body B of the same mass is thrown with velocity u at an angle of 60° to the horizontal. Find the ratio of the horizontal range and maximum height of A and B?

10. At what point of projectile motion (i) potential energy maximum (ii) Kinetic energy maximum (iii) total mechanical energy is maximum.

Click on link below to download CBSE Class 11 Liquid in Rest Worksheet C.