Work is always done on a body when it experiences an increase in energy through a mechanical influence.

True

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False

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Solution

The correct option is A True
Explanation
A force acts on body to displace it. it moves through a certain distance.
It experiences an increase in energy through a mechanical influence.
Hence, Work is always done on a body when it experiences an increase in energy through a mechanical influence.

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Similar questions

Underline the correct alternative :

(a) When a conservative force does positive work on a body, the potential energy of the body increases / decreases / remains unaltered.

(b) Work done by a body against friction always results in a loss of its kinetic / potential energy.

(c) The rate of change of total momentum of a many-particle system is proportional to the external force / sum of the internal forces on the system.

(d) In an inelastic collision of two bodies, the quantities which do not change after the collision are the total kinetic energy / total linear momentum / total energy of the system of two bodies.

Fill in the following blanks with suitable words :

(a) Work is measured as a product of ....................... and ..................

(b) The work done on a body moving in a circular path is .....................

(c) 1 joule is the work done when a force of one ............. moves an object through a distance of one.................. in the direction of .....................

(d) The ability of a body to do work is called .................... The ability of a body to do work because of its motion is called .................

(e) The sum of the potential and kinetic energies of a body is called ......... energy.

Q. It experiences an increase in energy through a mechanical influence A 50 g bullet moving with a velocity of 10

m s^{- 1}

strikes a block of mass 950 g at rest and gets embedded in it. The percentage loss in kinetic energy is

Q. Work is always done on a body when :

Q. When a conservative force does positive work on a body, then the (1) Potential energy of body increases (2) Potential energy of body decreases (3) Total mechanical energy of body increases (4) Total mechanical energy of body decreases

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Work is always done on a body when it experiences an increase in energy through a mechanical influence.

The correct option is A TrueExplanationA force acts on body to displace it. it moves through a certain distance. It experiences an increase in energy through a mechanical influence. Hence, Work is always done on a body when it experiences an increase in energy through a mechanical influence.

The correct option is A True
Explanation
A force acts on body to displace it. it moves through a certain distance.
It experiences an increase in energy through a mechanical influence.
Hence, Work is always done on a body when it experiences an increase in energy through a mechanical influence.