Physics-
General
Easy
Question
A block of mass m moving with a velocity 
on a smooth horizontal surface strikes and compresses a spring of stiffness k till mass comes to rest as shown in the figure. This phenomenon is observed by two observers To an observer A, the work done by the normal reaction N between the block and the spring on the block is
A) Standing on the horizontal surface
B) Standing on the block
- zero
- None of these
The correct answer is:
Related Questions to study
physics-
A block of mass m moving with a velocity on a smooth horizontal surface strikes and compresses a spring of stiffness k till mass comes to rest as shown in the figure. This phenomenon is observed by two observers To an observer A, the work done by spring force is
A: Standing on the horizontal surface
B: Standing on the block
A block of mass m moving with a velocity on a smooth horizontal surface strikes and compresses a spring of stiffness k till mass comes to rest as shown in the figure. This phenomenon is observed by two observers To an observer A, the work done by spring force is
A: Standing on the horizontal surface
B: Standing on the block
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A ball is released from point A as shown in figure. The ball leaves the track at B. All surfaces are smooth. Let h be the maximum height from ground reached by ball after leaving track at B. Then If track makes an angle 
with horizontal at B then maximum height attained by ball will be :
A ball is released from point A as shown in figure. The ball leaves the track at B. All surfaces are smooth. Let h be the maximum height from ground reached by ball after leaving track at B. Then If track makes an angle with horizontal at B then maximum height attained by ball will be :
physics-General
Maths-
If the lines 
and 
represent three consecutive sides of a rectangle then ab
Hence ab=18
Choice 1 is correct
If the lines and represent three consecutive sides of a rectangle then ab
Maths-General
Hence ab=18
Choice 1 is correct
chemistry-
The product obtained in this reaction is
The product obtained in this reaction is
chemistry-General
physics-
A ball is dropped on a floor and bounces back to a height somewhat less than the original height, which of the curves depicts its motion correctly?
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physics-General
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Acceleration-time graph of a body is shown. The corresponding velocity-time graph of the same body is
Acceleration-time graph of a body is shown. The corresponding velocity-time graph of the same body is
physics-General
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A particle starts from rest at 
and moves in a straight line with an acceleration as shown below. The velocity of the particle at 
is
A particle starts from rest at and moves in a straight line with an acceleration as shown below. The velocity of the particle at is
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The velocity-time graph of a body is shown in figure. The ratio of the ... during the intervals 
and 
is.
The velocity-time graph of a body is shown in figure. The ratio of the ... during the intervals and is.
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then C
then C
maths-General
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A particle moves along the sides 
of a square of side 
wuth a velocity of 
. Its average velocity is
A particle moves along the sides of a square of side wuth a velocity of . Its average velocity is
physics-General
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The acceleration of a train between two stations 2 km apart is shown in the figure. The maximum speed of the train is
The acceleration of a train between two stations 2 km apart is shown in the figure. The maximum speed of the train is
physics-General
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The distance-time graph of a particle at time 
makes angle 45
with time axis. After 1s, it makes angle 60 with time axis. What is the acceleration of the particle?
The distance-time graph of a particle at time makes angle 45 with time axis. After 1s, it makes angle 60 with time axis. What is the acceleration of the particle?
physics-General
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A particle starts from rest. Its acceleration 
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chemistry-
Diethyl ether on treatment with 
in presence of sunlight gives:
Diethyl ether on treatment with in presence of sunlight gives:
chemistry-General
physics-
Which of the following options is correct for the object having a straight line motion represented by the following graph
Which of the following options is correct for the object having a straight line motion represented by the following graph
physics-General
