We can assume that three particles of equal mass m are placed at the corners of triangle
Swimming is possible on account of
When the swimmer push some water in backward direction, then he get some momentum in forward direction from water & starts to swim. This is according to Newton’s third law. (action-reaction force).
Which of the following is NOT an illustration of Newton’s third law ?
A cricketer lower his hands while catching a ball to increase the time so as to decrease the force exerted by the ball on cricketer's hands. This is not an example of Newton's third law of motion.
A monkey is climbing up a rope, then the tension in the rope
A coin is placed on a rotating disc and is stationary w.r.t. the disc, then the direction of friction is
Friction provides centripetal force to the coin, hence acts towards the centre of the disc.
Friction always apposes relative motion between surfaces in contact and hence can act in any direction to oppose the relative motion.
A large truck and a car, both moving with a velocity of same magnitude have a head-on-collision. Car suffers more damage than the truck. This is because
(a) the material used in car is inferior than the material used in truck.
(b) car experience the greater force of impact than the truck.
(c) momentum transferred to the truck is greater than the momentum transferred to the car.
(d) momentum transferred to the car is greater than the momentum transferred to the truck.
Consider an elevator moving downwards with an acceleration a, the force exerted by a passenger of mass m on the floor of the elevator is
The force exerted by the floor of an elevator on the foot of a person standing there, is more than his weight, if the elevator is