Advertisements
Advertisements
प्रश्न
If the speed of a particle is increased four times, how will its kinetic energy be affected?
संख्यात्मक
Advertisements
उत्तर
K.E, K = `1/2 mv²
if speed is incresed four times
K.E,K' = `1/2` m(4v)²
or K' = 16 x `1/2` mv² = 16K
thus K.E becomes sisxteen times
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Work done = Force × ........................................
A machine raises a load of 750 N through a height of 16 m in 5 s. calculate:
- energy spent by machine,
- power at which the machine works.
Give two examples of couple action in our daily life.
What is the SI unit of work?
Write the SI and CGS units of power. How are they related?
A machine raises a load of 750 N through a height of 16 m in 5s. calculate:
(i) work done by machine,
(ii) power at which the machine works.
Is power a scalar or a vector quantity?
What is work?
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
An engine is pulling a train.
Work done by this force at any instant is ______.
