Physics-
General
Easy
Question
A 1kg block is being pushed against a wall by a force F = 75 N as shown in the Figure. The coefficient of friction is 0.25. The magnitude of acceleration of the block is
- 10
- 20
- 5
- none
The correct answer is: 10
Related Questions to study
physics-
The velocity time graph of the fig. shows the motion of a wooden block of mass 1 kg which is given an initial push t = 0, along a horizontal table.
The velocity time graph of the fig. shows the motion of a wooden block of mass 1 kg which is given an initial push t = 0, along a horizontal table.
physics-General
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With what minimum acceleration mass M must be moved on frictionless surface so that m remains stick to it as shown. The coefficient of friction between M & m is 
With what minimum acceleration mass M must be moved on frictionless surface so that m remains stick to it as shown. The coefficient of friction between M & m is
physics-General
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I An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force 
The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking : 
f initial velocity of the block is zero, its velocity at 4 seconds will be
I An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking :
f initial velocity of the block is zero, its velocity at 4 seconds will be
physics-General
physics-
An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking : 
The graph of net force on the block with time will be
An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking :
The graph of net force on the block with time will be
physics-General
physics-
An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking :
The graph of friction force (f) with time will be
An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking :
The graph of friction force (f) with time will be
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The system shown is just on the verge of slipping . The co-efficient of static friction between the block and the table top is:
The system shown is just on the verge of slipping . The co-efficient of static friction between the block and the table top is:
physics-General
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Two trolley A and B are moving with accelerations a and 2a respectively in the same direction. To an observer in trolley A, the magnitude of pseudo force acting on a block of mass m on the trolley B is
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physics-General
chemistry-
Which of the following pairs of structures shows geometrical isomerism
I) 
II) 
III) 
IV) 
Which of the following pairs of structures shows geometrical isomerism
I)
II)
III)
IV)
chemistry-General
chemistry-
In both the complexes Co have 
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chemistry-General
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Two smooth balls A and B, each of mass m and radius R, have their centre at (0,0,R) and at (5R,–R,R) respectively, in a coordinate system as shown. Ball A, moving along positive x axis, collide with ball B. Just before the collision, speed of ball A is 4 m/s and ball B is stationary. The collision between the balls is elastic Coefficient of restitution during the collision is changed to 1/2, keeping all other parameters unchanged. What is the velocity of the ball B after the collision?
Two smooth balls A and B, each of mass m and radius R, have their centre at (0,0,R) and at (5R,–R,R) respectively, in a coordinate system as shown. Ball A, moving along positive x axis, collide with ball B. Just before the collision, speed of ball A is 4 m/s and ball B is stationary. The collision between the balls is elastic Coefficient of restitution during the collision is changed to 1/2, keeping all other parameters unchanged. What is the velocity of the ball B after the collision?
physics-General
physics-
There are two massless springs A and B of spring constant 
and 
respectively and 
If 
and 
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In the arrangement shown, all surfaces are frictionless. The rod R is constrained to move vertically. The vertical acceleration of R is 
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The ratio / is equal to
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In the figure shown, A & B are free to move. All the surfaces are smooth. 
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physics-General
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In the figure shown man is balanced by counter weight of same mass. He starts to climb the rope with an accelerator of 
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physics-General
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In the fig. at the free end of the light string, a force F is appled to keep the suspended mass of 18 kg at rest. Assuming pulley is light then the force exerted by the ceiling on the system is:
In the fig. at the free end of the light string, a force F is appled to keep the suspended mass of 18 kg at rest. Assuming pulley is light then the force exerted by the ceiling on the system is:
physics-General
