Home
Class 11
PHYSICS
Assertion: A cubical block is moving on ...

Assertion: A cubical block is moving on a rough ground with velocity `v_()`. During motion net normal reaction on the block from ground will not pass through centre of cube. it will shift towards right.
Reason: It is to keep the block is rotational equilibrium

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

If assertion is true, but the reaction is false.

D

If assertion is false but the reason is true.

Text Solution

Verified by Experts


`f=` friction force
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MECHANICS

    DC PANDEY|Exercise Level 1 Objective|30 Videos
  • ROTATIONAL MECHANICS

    DC PANDEY|Exercise Level 1 Subjective|32 Videos
  • ROTATIONAL MECHANICS

    DC PANDEY|Exercise Exercise 12.11|2 Videos
  • ROTATION

    DC PANDEY|Exercise (C) Chapter Exercises|39 Videos
  • ROTATIONAL MOTION

    DC PANDEY|Exercise Integer Type Questions|17 Videos

Similar Questions

Explore conceptually related problems

Asseration : A block of mass m starts moving on a rough horizontal surface with a velocity v. It stops due to friction between the block and the surface after moving through a ceratin distance. The surface is now tilted to an angle of 30^@ with the horizontal and same block is made to go up on the surface with the same initial velocity v. The decrease in the mechanical energy in the second situation is small than the first situation. Reason : The coefficient of friction between the block and the surface decreases with the increase in the angle of inclination.

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five reponses (a) If both Assertion and Reason arecorrect and Reason is the correct explanation of Asserrtion. (b) If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (c ) If Assertion is true but Reason is false. (d) If Assertion is false but Reason is true. Assertion A block of mass m starts moving on a rough horizontal surface with a velocity v. It stops due to friction between the block and the surface after moving through a certain distance. The surface is now tilted to an angle of 30^(@) with the horizontal and the same block is made to go up on the surface with the same initial velocity v. The decrease in the mechanical energy in the second situation is smaller than that in the first situation. Reason The coefficient of friction between the block and the surface decreases with the increase in the anglle of inclination.

A plank is moving on ground with a velocity v and a block is moving on the plank with respect to it with a velocity u as shown in figure. What is the velocity of block with respect to ground ?

In the following questions, each question contains Statement I(assertion) and StatementII(reason). Each questions has four choices a, b, c, and d out of which only one is correct. Statement I: A block of mass m starts moving on a rough horizontal surface with a velocity v. It stops due to friction between the block and the surface after moving through a certain distance. The surface is now titled to an angle of 30^@ with the horizontal and the same block is made to go up on the surface with the same initial velocity v. The decrease in mechanical energy in the second situation is smaller than that in the first situation. Statement II: The coefficient of friction between the block and the surface decreases with the increase in the angel of inclination.

Assertion: In the figure shown, linear momentum of system (of blocks A and B) moves towards right during motion of block A over the block B. Reason: Initial acceleration of center of mass is towards right.

A block of mass m moves on a horizontal rough surface with initial velocity v . The height of the centre of mass of the block is h from the surface. Consider a point A on the surface.

A cubical block of mass sqrt2 kg is sliding down on a smooth inclined right angled trough as shown in the figure. The two adjacent surface of cube are always in contact with the trough. Then the net reaction force on the block is

Consider the situation as shown. If a vehicle moves towards right with constant velocity v_(0) , find the velocity and acceleration of the block in terms of h and x, where x is the distance traveled by the vehicle towards right.

Assertion: Two blocks of masses m_(A) and m_(B) (gtm_(A) are thrown towards each other with same speed over a rough ground. The coefficient of friction of both the blocks with ground is same. Initial velocity of CM is towards left. Reason: Initial acceleration of center of mass is towards right.