Advertisements
Advertisements
प्रश्न
Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?
उत्तर
- An object's acceleration could be zero even when several forces are acting on it. This happens when all the forces cancel out each other, i.e., the net force acting on the object is zero.
- For a uniformly moving object, the net force acting on the object is zero.
- Hence, the acceleration of the object is zero. Hence, Soni is right.
- Then, according to the equation F = ma, the mass of the object.
- Acceleration = `F/m` (since F = 0) will also be zero.)
APPEARS IN
संबंधित प्रश्न
Work done = Force × ........................................
The energy of a body is its capacity to do .........
The S.I. unit of work is
Define the term energy.
Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.
What is the condition for a force to do work on a body?
Why is the work done on an object moving with uniform circular motion zero?
Name the force acting away from the centre of circular path.
Nm is the unit of .......
Give an example
Electrical energy changes of sound energy.
Give an example
Light energy changes to electrical energy.
The work done by the heart is 1 Joule per beat. Calculate the power of the heart if it beats 72 times in one
The weights of two bodies are 2.0 N and 2.0 kgf respectively what is the mass of each body?
An electric motor pump is 60% efficient and is rated 2.5 H.P. Calculate the maximum load it can lift through a height of 10m in 8 sec. (1 H.P. = 750 W).
A body of mass 0.5 kg travels on straight line path with velocity v = (3x2 + 4) m/s. The net work done by the force during its displacement from x = 0 tox = 2 m is ______.
