Home
Class 12
PHYSICS
A triangular block of mass M with angle ...

A triangular block of mass M with angle 30º, 60º, 90º rests with its 30º– 90º side on a horizontal smooth fixed table. A cubical block of mass m rests on the 60º – 30º sideofthe triangular block. What horizontal acceleration a must M have relative to the stationary table so that m remains stationary with respect to the triangular block [M = 9 kg, m = 1 kg]

A

g

B

`(g)/(sqrt(2))`

C

`(g)/(sqrt(3))`

D

`(g)/(sqrt(5))`

Text Solution

Verified by Experts

The correct Answer is:
C
`ma cos30^(@)= mg sin 30^(@)`
`:.a=(g)/(sqrt(3))`
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    DISHA PUBLICATION|Exercise Exercise-1: Concept Builder (Topicwise) (Topic 4: Friction )|10 Videos

  • LAWS OF MOTION

    DISHA PUBLICATION|Exercise Exercise-1: Concept Builder (Topicwise) (Topic 5: Circular Motion and Banking of Road )|7 Videos

  • LAWS OF MOTION

    DISHA PUBLICATION|Exercise Exercise-1: Concept Builder (Topicwise) (Topic 2: Momentum, Law of Conservation of Momentum and Impulse)|15 Videos

  • JEE MAINS- 2019 (HELD ON :9TH APRIL 2019 (SHIFT-I))

    DISHA PUBLICATION|Exercise QUESTIONS|30 Videos

  • MAGNETISM AND MATTER

    DISHA PUBLICATION|Exercise EXERCISE-2:CONCEPT APPLICATOR|31 Videos

Similar Questions

Explore conceptually related problems

The acceleration a of trolley so that block of mass m remains stationary with respect to rough trolley as shown in the figure, is m Trolley 0 - ...

A right-angled triangular block of mass M rests on a horizontal table . The inclination of the block is 30^(@) with the table . A cubical block of mass m is placed on the incline of the block . What horizontal force must be applied on M so that m may remain stationery relative to the block ? [Hint: Apply d' Alember's principal and consider free-body diagrams of m and the system ( m+ M).]

A horizontal force F acts on the block of mass m and the block remains stationary, thr value of friction force is.

A block of mass m rests on a stationary wedge of mass M. The wedge can slide freely on a smooth horizontal surface as shown in figure. If the block starts from rest

A block of mass m is placed at rest on a smooth wedge of mass M placed at rest on a smooth horizontal surface. As the system is released

Two wooden blocks are moving on a smooth horizontal surface such that the mass m remains stationary with respect too block of mass M as shown in the figure. The magnitude of force P is:

A block of mass m_(1) rests on a horizontal table. A string tied to the block is passed on a frictionless pulley fixed at the end of the table and to the other end of string is hung another block of mass m_(2) . The acceleration of the system is

48.A block of mass 5kg is at rest on a smooth horizontal surface Water coming out of a pipe horizontally at the rate of 2kg/sec ,hits the block with a velocity of 6m/sec.The initial acceleration of the block is

A wooden block of mass m resting on a rough horizontal table (coefficient of friction = mu ) is pulled by a force F as shown in figure.The acceleration of the block moving horizontally is :