Advertisements
Advertisements
प्रश्न
The work done on an object does not depend on the :
विकल्प
displacement
angle between force and displacement
force applied
initial velocity of the object
Advertisements
उत्तर
The work done on an object does not depend upon the initial velocity of the moving object.
Therefore, the answer is, (d) Initial velocity of the object.
APPEARS IN
संबंधित प्रश्न
Give reasons for the following A teacher moving around in the class is doing work but a child standing and reading a book is not doing any work.
When is work said to be done by a force?
A water pump raises 50 litres of water through a height of 25 m in 5 s. Calculate the power of the pump required.
(Take g = 10 N kg-1 and density of water = 1000 kg m-3)
A box of weight 150 kgf has gravitational potential energy stored in it equal to 14700 J. Find the height of the box above the ground. (Take g = 9.8 N kg-1)
When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it.
P, Q and R are three forces which act as shown in fig.
The point O lies in the same plane. Given, P = Q = R = 10N
(i) Which force has the least moment about O? Give a reason.
(ii)Which force has the greatest moment about O? Give a reason.
Give an example
Electrical energy changes to heat energy.
A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car
