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प्रश्न
How is force related to the momentum of a body?
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उत्तर
Force is equal to the rate of change of momentum.
संबंधित प्रश्न
Complete the following
1 N = ..........dyne.
Which of the following is not the force at a distance:
(a) electrostatic force
(b) gravitational force
(c) frictional force.
(d) magnetic force.
A body of mass 1.5 kg is dropped from a height of 12 m. What is the force acting on it during its fall? (g = 9.8 ms−2)
Two balls of masses in ratio 1 : 2 are dropped from the same height find
a) the ratio between their velocities when they strike the ground and
b) the ration if the forces acting on them during motion.
A man can open a nut by applying a force of 150 N by using a lever handle of length 0.4 m. What should be the length of the handle if he is able to open it by applying a force of 60 N?
Force acting on a given area is called pressure.
Give two examples to verify that a force tends to change the static condition of a body.
A mechanic unscrew a nut by applying a force of 140 N with a spanner of length 40 cm. What should be the length of the spanner if a force of 40 N is applied to unscrew the same nut?
In ‘tug of war’ when two teams pull equally hard, then what happens?
Write true and false.
If mass increases, force decreases.
