Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
K.E = `1/2` mv²
60 = `1/2` (30) (v)²
or v² = 4 m/s
or v= 2 m/s
APPEARS IN
संबंधित प्रश्न
Name a common device where a gear train is used
Derive a relationship between S.I. and C.C.S. unit of work
Work done = Force × ........................................
A force of 50 N acts on a body and moves it a distance of 4 m on horizontal surface. Calculate the work done if the direction of force is at an angle of 60° to the horizontal surface.
Name the physical quantity associated with the 'rate of doing work'.
Fill in the boxe to show the corresponding energy transformation.

State the energy changes which take place when An electric bulb glows when it is connected to a source of electric current.
What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?
