MEDIUM
KEAM
IMPORTANT
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A mass $m$, suspended vertically by a massless ideal spring with spring constant $k$, is at rest. The mass is displaced upward by a height $h$. When released, the kinetic energy of the mass will be proportional to (Neglecting air resistance)
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Important Questions on Work, Energy and Power
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KEAM
IMPORTANT
If a force acting on a particle displaces it from to then the work done by the force (in units of work) is
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KEAM
IMPORTANT
The Work - Energy theorem
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IMPORTANT
A running boy has the same kinetic energy as that of a man of twice his mass. If the speed of the boy is the speed of the man is
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An object, moving with velocity undergoes an acceleration of at time If the object has a mass of the kinetic energy of the object at time is
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A body of mass is moving in a medium and experiences a frictional force , where is the speed of the body. The initial speed is and after s, its energy becomes half of the initial energy. Then, the value of is
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IMPORTANT
Some of the following equations are kinematical equations, where the symbols have their usual meaning. The theorem is represented by
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KEAM
IMPORTANT
A spring of natural length and spring constant is kept on a horizontal frictionless table with one end attached to a rigid support. First the spring was compressed by and then released to hi a ball of mass kept at a distance from the rigid support, if after hitting the ball, the natural length of the spring is restored, what is the speed with which the ball moved ? (Ignore the air resistance)
MEDIUM
KEAM
IMPORTANT
A mass $m$, suspended vertically by a massless ideal spring with spring constant $k$, is at rest. The mass is displaced upward by a height $h$. When released, the kinetic energy of the mass will be proportional to (Neglecting air resistance)
