Advertisements
Advertisements
प्रश्न
State Newton's second law of motion. Is Newton's first law of motion contained in Newton's second law of motion?
Advertisements
उत्तर
According to newton's second law of motion, when a force acts on a body, the rate of change in momentum of a body is equal to the product of the mass of the body and acceleration produced in it.
Yes, Newton's first law is contained in the second law as if force is zero then the acceleration would be zero which means the body would remain in its state of rest or in state of constant motion.
APPEARS IN
संबंधित प्रश्न
A car accelerates on a horizontal road due to the force exerted by.
Two blocks A and B of mass mA and mB , respectively, are kept in contact on a frictionless table. The experimenter pushes block A from behind, so that the blocks accelerate. If block A exerts force F on block B, what is the force exerted by the experimenter on block A?
A man has fallen into a ditch of width d and two of his friends are slowly pulling him out using a light rope and two fixed pulleys as shown in the following figure. Show that the force (assumed equal for both the friends) exerted by each friend on the road increases as the man moves up. Find the force when the man is at a depth h.
Find the acceleration of the block of mass M in the situation shown in the following figure. All the surfaces are frictionless and the pulleys and the string are light.
A monkey is climbing on a rope that goes over a smooth light pulley and supports a block of equal mass at the other end in the following figure. Show that whatever force the monkey exerts on the rope, the monkey and the block move in the same direction with equal acceleration. If initially both were at rest, their separation will not change as time passes.
A body of mass 5 kg is moving with velocity 2 m s-1. Calculate its linear momentum.
An electron of mass 9 × 10−31 kg is moving with a linear velocity of 6 × 107 ms−1. Calculate the linear momentum of electron.
Name the physical entity used for quantifying the motion of a body.
A hockey player is moving northward and suddenly turns westward with the same speed to avoid an opponent. The force that acts on the player is ______.
A body of mass 2 kg travels according to the law x(t) = pt + qt2 + rt3 where p = 3 ms−1, q = 4 ms−2 and r = 5 ms−3. The force acting on the body at t = 2 seconds is ______.
