Physics-
General
Easy
Question
STATEMENT-1 : A fixed wedge of inclination lies on horizontal table. x and y axes are drawn on inclined surface as shown, such that x axis is horizontal and y-axis is along line of greatest slope. A block of mass m is placed (at rest) on inclined surface at origin. The coefficient of friction between block and wedge is , such that . Then a force applied to block parallel to inclined surface and along x-axis can move the block along x-axis
STATEMENT-2 : To move the block placed at rest on rough inclined surface along the inclined surface, the net force on block (except frictional force) should be greater than . (N = normal reaction on block).
- Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
- Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1
- Statement-1 is True, Statement-2 is False
- Statement-1 is False, Statement-2 is True
The correct answer is: Statement-1 is False, Statement-2 is True
Related Questions to study
chemistry-
Borax is converted into B by steps Borax I and II reagents are
Borax is converted into B by steps Borax I and II reagents are
chemistry-General
chemistry-
The following diagram shows the arrangement of lattice points with and . Choose the correct options
The following diagram shows the arrangement of lattice points with and . Choose the correct options
chemistry-General
chemistry-
In the cubic lattice given below, the three distances between the atoms , and are, respectively,
In the cubic lattice given below, the three distances between the atoms , and are, respectively,
chemistry-General
chemistry-
In an f cc unit cell, atoms are numbered as shown below. The atoms not touching each other are (Atom numbered 3 is face center of front face)
In an f cc unit cell, atoms are numbered as shown below. The atoms not touching each other are (Atom numbered 3 is face center of front face)
chemistry-General
chemistry-
In body-centered cubic lattice given below, the three distances AB, AC, and AA'' are
In body-centered cubic lattice given below, the three distances AB, AC, and AA'' are
chemistry-General
chemistry-
The packing efficiency of the two-dimensional square unit cell shown below is
The packing efficiency of the two-dimensional square unit cell shown below is
chemistry-General
physics-
A particle A of mass kg is moving in the positive direction of x. Its initial position is x = 0 & initial velocity is 1 . The velocity at x = 10 is in (use the graph given)
A particle A of mass kg is moving in the positive direction of x. Its initial position is x = 0 & initial velocity is 1 . The velocity at x = 10 is in (use the graph given)
physics-General
physics-
STATEMENT-1 : A block of mass m is placed at rest on rough horizontal surface. The coefficient of friction between the block and horizontal surface is . The minimum force F applied at angle (as shown in figure) to pull the block horizontally is not equal to mmg. (Take )
STATEMENT-2 : For a block of mass m placed on rough horizontal surface, the minimum horizontal force required to pull the block is . The minimum force F applied at angle (as shown in figure) to pull the block horizontally may be less than mmg. (Where is co-efficient of friction)
STATEMENT-1 : A block of mass m is placed at rest on rough horizontal surface. The coefficient of friction between the block and horizontal surface is . The minimum force F applied at angle (as shown in figure) to pull the block horizontally is not equal to mmg. (Take )
STATEMENT-2 : For a block of mass m placed on rough horizontal surface, the minimum horizontal force required to pull the block is . The minimum force F applied at angle (as shown in figure) to pull the block horizontally may be less than mmg. (Where is co-efficient of friction)
physics-General
physics-
In the following figure, find the direction of friction on the blocks and ground respectively
In the following figure, find the direction of friction on the blocks and ground respectively
physics-General
physics-
A mass m is supported as shown in the figure by ideal strings connected to a rigid wall and to a mass 3m at rest on a fixed horizontal surface. The string connected to larger mass is horizontal, that connected to smaller mass is vertical and the one connected to wall makes an angle with horizontal. Then the minimum coefficient of static friction between the larger mass and the horizontal surface that permits the system to remain in equilibrium in the situation shown is:
A mass m is supported as shown in the figure by ideal strings connected to a rigid wall and to a mass 3m at rest on a fixed horizontal surface. The string connected to larger mass is horizontal, that connected to smaller mass is vertical and the one connected to wall makes an angle with horizontal. Then the minimum coefficient of static friction between the larger mass and the horizontal surface that permits the system to remain in equilibrium in the situation shown is:
physics-General
physics-
Given . Between A and B , between B and C and between C and ground . The least horizontal force F to start the motion of any part of the system of three blocks resting upon one another as shown in figure is (g = 10 )
Given . Between A and B , between B and C and between C and ground . The least horizontal force F to start the motion of any part of the system of three blocks resting upon one another as shown in figure is (g = 10 )
physics-General
physics-
In the system shown in figure the friction coefficient between ground and bigger block is . There is no friction between both the blocks. The string connecting both the block is light; all three pulleys are light and frictionless. Then the minimum limiting value of so that the system remains in equilibrium is
In the system shown in figure the friction coefficient between ground and bigger block is . There is no friction between both the blocks. The string connecting both the block is light; all three pulleys are light and frictionless. Then the minimum limiting value of so that the system remains in equilibrium is
physics-General
physics-
A chain of length L is placed on a horizontal surface as shown in figure. At any instant x is the length of chain on rough surface and the remaining portion lies on smooth surface. Initially x = 0. A horizontal force P is applied to the chain (as shown in the figure ). In the duration x changes from x = 0 to x = L, for chain to move with constant speed:
A chain of length L is placed on a horizontal surface as shown in figure. At any instant x is the length of chain on rough surface and the remaining portion lies on smooth surface. Initially x = 0. A horizontal force P is applied to the chain (as shown in the figure ). In the duration x changes from x = 0 to x = L, for chain to move with constant speed:
physics-General
chemistry-
What are types of following semiconductors I and II
What are types of following semiconductors I and II
chemistry-General
chemistry-
What type of crystal defect is indicated in the diagram given below
What type of crystal defect is indicated in the diagram given below
chemistry-General