English
Karnataka Board PUCPUC Science Class 11

A Block of Mass M Slides Down a Smooth Vertical Circular Track. During the Motion, the Block is in - Physics

Advertisements
Advertisements

Question

A block of mass m slides down a smooth vertical circular track. During the motion, the block is in  

Options

  • vertical equilibrium

  • horizontal equilibrium

  •  radial equilibrium

  •  none of these.

MCQ
Advertisements

Solution

 none of these.
The net force on the block is not zero, therefore the block will not be in any given equilibrium.

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Work and Energy - MCQ [Page 131]

APPEARS IN

HC Verma Concepts of Physics Vol. 1 [English] Class 11 and 12
Chapter 8 Work and Energy
MCQ | Q 9 | Page 131

RELATED QUESTIONS

A body of mass m is placed on a table. The earth is pulling the body with a force mg. Taking this force to be the action what is the reaction?


A boy is sitting on a chair placed on the floor of a room. Write as many action-reaction pairs of forces as you can.


List all the forces acting on the block B in figure.


The sum of all electromagnetic forces between different particles of a system of charged particles is zero 


A proton exerts a force on a proton which is

(a) gravitational
(b) electromagnetic
(c) nuclear
(d) weak


Calculate the force with which you attract the earth.


The force with which the earth attracts an object is called the weight of the object. Calculate the weight of the moon from the following data : The universal constant of gravitation G = 6.67 × 11−11 N−m2/kg2, mass of the moon = 7.36 × 1022 kg, mass of the earth = 6 × 1024 kg and the distance between the earth and the moon = 3.8 × 105 km. 


Find the ratio of the magnitude of the electric force to the gravitational force acting between two protons.


A constant force of 2⋅5 N accelerates a stationary particle of mass 15 g through a displacement of 2⋅5 m. Find the work done and the average power delivered.

 

A man moves on a straight horizontal road with a block of mass 2 kg in his hand. If he covers a distance of 40 m with an acceleration of 0⋅5 m/s2, find the work done by the man on the block during the motion.


A box weighing 2000 N is to be slowly slid through 20 m on a straight track with friction coefficient 0⋅2 with the box. (a) Find the work done by the person pulling the box with a chain at an angle θ with the horizontal. (b) Find the work when the person has chosen a value of θ, which ensures him the minimum magnitude of the force. 


A 250 g block slides on a rough horizontal table. Find the work done by the frictional force in bringing the block to rest if it is initially moving at a speed of 40 cm/s. If the friction coefficient between the table and the block is 0⋅1, how far does the block move before coming to rest?


A uniform chain of length L and mass M overhangs a horizontal table with its two third part on the table. The friction coefficient between the table and the chain is μ . Find the work done by friction during the period the chain slips off the table.

 

A force F = 20 + 10y acts on a particle in y-direction where F is in newton and y in metre. Work done by this force to move the particle from y – 0 to y – 1 m is:


The work done by an applied variable force, F = x + x3 from x = 0 m to x = 2m, where x is displacement, is:


A body is moving unidirectionally under the influence of a source of constant power supplying energy. Which of the diagrams shown in figure correctly shows the displacement-time curve for its motion?


A graph of potential energy V(x) verses x is shown in figure. A particle of energy E0 is executing motion in it. Draw graph of velocity and kinetic energy versus x for one complete cycle AFA.


A cylinder of area 300 cm2 and length 10 cm made of material of specific gravity 0.8 is floated in water with its axis vertical. It is then pushed downward, so as to be just immersed. The work done by the agent who pushes the cylinder into the water is ______ J.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×