Physics-
General
Easy
Question
A block of mass M = 5kg is resting on a rough horizontal surface for which the coefficient of friction is 0.2. When a force F = 40 N is applied, the acceleration of the block will be (g = 10 m/s2) :
- 5.73 m/s2
- 8.0 m/s2
- 3.17 m/s2
- 10.0 m/s2
The correct answer is: 5.73 m/s2
Related Questions to study
physics-
On the horizontal surface of a truck ( = 0.6), a block of mass 1 kg is placed. If the truck is accelerating at the rate of 5m/s2 then frictional force on the block will be :
On the horizontal surface of a truck ( = 0.6), a block of mass 1 kg is placed. If the truck is accelerating at the rate of 5m/s2 then frictional force on the block will be :
physics-General
physics-
Two carts of masses 200 kg and 300 kg on horizontal rails are pushed apart. Suppose the coefficient of friction between the carts and the rails are same. If the 200 kg cart travels a distance of 36 m and stops, then the distance travelled by the cart weighing 300 kg is :
Two carts of masses 200 kg and 300 kg on horizontal rails are pushed apart. Suppose the coefficient of friction between the carts and the rails are same. If the 200 kg cart travels a distance of 36 m and stops, then the distance travelled by the cart weighing 300 kg is :
physics-General
physics-
A block of mass 5 kg is on a rough horizontal surface and is at rest. Now a force of 24 N is imparted to it with negligible impulse. If the coefficient of kinetic friction is 0.4 and g = 9.8 m/s2 , then the acceleration of the block is :
A block of mass 5 kg is on a rough horizontal surface and is at rest. Now a force of 24 N is imparted to it with negligible impulse. If the coefficient of kinetic friction is 0.4 and g = 9.8 m/s2 , then the acceleration of the block is :
physics-General
physics-
If mass of A = 10 kg, coefficient of static friction = 0.2, coefficient of kinetic friction = 0.2. Then mass of B to start motion is :
If mass of A = 10 kg, coefficient of static friction = 0.2, coefficient of kinetic friction = 0.2. Then mass of B to start motion is :
physics-General
physics-
The coefficient of static friction, µs , between block A of mass 2 kg and the table as shown in the figure is 0.2. What would be the maximum mass value of block B so that the two blocks do not move? The string and the pulley are assumed to be smooth and massless. (g = 10 m/s2)
The coefficient of static friction, µs , between block A of mass 2 kg and the table as shown in the figure is 0.2. What would be the maximum mass value of block B so that the two blocks do not move? The string and the pulley are assumed to be smooth and massless. (g = 10 m/s2)
physics-General
physics-
A horizontal force of 10 N is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and the wall is 0.2, the weight of the block is :
A horizontal force of 10 N is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and the wall is 0.2, the weight of the block is :
physics-General
physics-
A block of mass 2 kg is kept on the floor. The coefficient of static friction is 0.4. If a force F of 2.5 Newtons is applied on the block as shown in the figure, the frictional force between the block and the floor will be :
A block of mass 2 kg is kept on the floor. The coefficient of static friction is 0.4. If a force F of 2.5 Newtons is applied on the block as shown in the figure, the frictional force between the block and the floor will be :
physics-General
physics-
A block A with mass 100 kg is resting on another block B of mass 200 kg. As shown in figure a horizontal rope tied to a wall holds it. The coefficient of friction between A and B is 0.2 while coefficient of friction between B and the ground is 0.3. The minimum required force F to start moving B will be :
A block A with mass 100 kg is resting on another block B of mass 200 kg. As shown in figure a horizontal rope tied to a wall holds it. The coefficient of friction between A and B is 0.2 while coefficient of friction between B and the ground is 0.3. The minimum required force F to start moving B will be :
physics-General
physics-
The blocks A and B are arranged as shown in the figure. The pulley is frictionless. The mass of A is 10kg. The coefficient of friction of A with the horizontal surface is 0.20. The minimum mass of B to start the motion will be :
The blocks A and B are arranged as shown in the figure. The pulley is frictionless. The mass of A is 10kg. The coefficient of friction of A with the horizontal surface is 0.20. The minimum mass of B to start the motion will be :
physics-General
physics-
Which is a suitable method to decrease friction :
Which is a suitable method to decrease friction :
physics-General
physics-
Two masses A and B of 10 kg and 5 kg respectively are connected with a string passing over a frictionless pulley fixed at the corner of a table as shown. The coefficient of static friction of A with table is 0.2. The minimum mass of C that may be placed on A to prevent it from moving is :
Two masses A and B of 10 kg and 5 kg respectively are connected with a string passing over a frictionless pulley fixed at the corner of a table as shown. The coefficient of static friction of A with table is 0.2. The minimum mass of C that may be placed on A to prevent it from moving is :
physics-General
physics-
In the figure shown, a block of weight 10 N resting on a horizontal surface. The coefficient of static friction between the block and the surface µs = 0.4. A force of 3.5 N will keep the block in uniform motion, once it has been set in motion. A horizontal force of 3 N is applied to the block, then the block will :
In the figure shown, a block of weight 10 N resting on a horizontal surface. The coefficient of static friction between the block and the surface µs = 0.4. A force of 3.5 N will keep the block in uniform motion, once it has been set in motion. A horizontal force of 3 N is applied to the block, then the block will :
physics-General
physics-
The coefficient of friction µ and the angle of friction are related as :
The coefficient of friction µ and the angle of friction are related as :
physics-General
physics-
Assertion (A) : A charged particle is free to move in an electric field. It does not move along an electric line of force ?
Reason (R) : Its initial position decides that it will move along the line of force or not.
Assertion (A) : A charged particle is free to move in an electric field. It does not move along an electric line of force ?
Reason (R) : Its initial position decides that it will move along the line of force or not.
physics-General
physics-
Assertion (A) : Though large number of free electrons are present in the metal, yet there is no current in the absent of electric field.
Reason (R) : In the absence of electric field, electrons move randomly in all directions.
Assertion (A) : Though large number of free electrons are present in the metal, yet there is no current in the absent of electric field.
Reason (R) : In the absence of electric field, electrons move randomly in all directions.
physics-General