Advertisements
Advertisements
प्रश्न
Is it possible that no transfer of energy may take place even when a force is applied to a body?
उत्तर
Yes, when force is normal to displacement, no transfer of energy takes place.
APPEARS IN
संबंधित प्रश्न
A stone of mass m is rotated in a circular path with a uniform speed by tying a strong string with the help of your hand. Answer the following questions
1) Is the stone moving with a uniform or variable speed?
2) Is the stone moving with a uniform acceleration? In which direction does the acceleration act?
3) What kind of force acts on the hand and state its direction?
Name the quality which is measured in eV
A mechanic can open a nut by applying a force of 200 N while using a lever handle of 50 cm length. How long handle is required if he wants to open it by applying a force of only 50 N?
What do you mean by a centrifugal force?
What is the work done when the force on the object and the displacement of the object are perpendicular to each other?
An engine does 54,000 J of work by exerting a force of 6000 N on it. What is the displacement in the direction of the force?
State and define the unit of force in the S.I. system.
What do you understand by work? Is work a scalar or a vector quantity?
