Home
Class 11
PHYSICS
A rigid ring A and a rigid thin disk B b...


A rigid ring A and a rigid thin disk B both made of same material when gently placed on water just manage to float due to surface tension as shown in the figure. Both the ring and the disk have same radius what can you conclude about their masses?
(a). Both habve the same mass.
(b). mass of ring is half of that of the disk
(c). mass of the ring is double to that of the disk.
(d). more information is needed to decide.

Text Solution

Verified by Experts

The correct Answer is:
C

Ring have double surface than that of disk.
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 1 (Elasticity)|16 Videos

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 1 (Surface Tension)|21 Videos

  • CENTRE OF MASS

    ALLEN|Exercise EXERCISE-V B|19 Videos

  • ERROR AND MEASUREMENT

    ALLEN|Exercise Part-2(Exercise-2)(B)|22 Videos

Similar Questions

Explore conceptually related problems

A ring and a brick made of gold have the same density.

What is the force of surface tension on a light ring of radius r floating on a liquid of surface tension gamma ?

The M.I. of a ring and disc of same mass and radius about their geometric axes will be:

Three rings each of mass m and radius r are so placed that they touch each other. The radius of gyration of the system about the axis as shown in the figure is

Seven identical disc are arranged in a hexagonal, planar pattern so as to touch each neighbour, as shown in the figure. Each disc has mass m and radius r . What is the moment of inertia of the system of seven disks about an axis passing through the centre of central disk and normal to plane of all disks ? .

A disk sliding with velocity u on a smooth horizontal plane strikes another identical disk kept at rest as shown in the figure. If the impact between the disks is perfectly elastic impact, find velocities of the disks after the impact.

A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120^(@)C , then

A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120^(@)C , then

A sector cut from a uniform disk of radius 12cm and a uniform rod of the same mass bent into shape of an arc are arranged facing each other as shown in the figure. If center of mass of the combination is at the origin, what is the raius of the arc?

A solid sphere of radius R is placed on a cube of side 2R. Both are made of same material. Find the distance of their centre of mass fro the interface.