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Work Done in Different Frames of Reference

What is the c...

Question

What is the condition for a force to do work on a body?

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Solution

The necessary condition for force to do work is that the applied force should produce motion in the body in any direction except the direction perpendicular to the force applied.

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What is the condition for a force to do work on a body ?

Q. Which of the following conditions are necessary for a rigid body to be in mechanical equilibrium?
Condition 1: Net external force acting on body is zero.
Condition 2: Net external torque acting on body is zero.
Condition 3: Internal forces and torque due to internal forces must be absent.

Q. The force required to do

10 J

of work on a body to displace it by

10 m

Q. What is the term for the capacity of a body or a system to do work?

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.

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Work Done in Different Frames of Reference

Standard XII Physics

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