10th Physics Numerical Problems

	Laws of Motion Numerical Problems Video Solution
	SOLVED PROBLEMS(Click the Question)
1.	Problem-1: Calculate the velocity of a moving body of mass 5 kg whose linear momentum is 2.5 kg m s–1.
2.	Problem 2: A door is pushed, at a point whose distance from the hinges is 90 cm, with a force of 40 N. Calculate the moment of the force about the hinges
3.	Problem 3 : At what height from the centre of the Earth the acceleration due to gravity will be 1/4th of its value as at the Earth.
	Solve the given problems
1.	Two bodies have a mass ratio of 3:4 The force applied on the bigger mass produces an acceleration of 12 ms-2.What could be the acceleration of the other body, if the same force acts on it.
2.	A ball of mass 1 kg moving with a speed of 10 ms-1 rebounds after a perfect elastic collision with the floor. Calculate thechange in linear momentum of the ball
3.	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?
4.	The ratio of masses of two planets is 2:3 and the ratio of their radii is 4:7 Find the ratio of their accelerations due to gravity
	HOT Questions
5.	Two blocks of masses 8 kg and 2 kg respectively lie on a smooth horizontal surface in contact with one other. They are pushed by a horizontally applied force of 15 N. Calculate the force exerted on the 2 kg mass
6.	A heavy truck and bike are moving with the same kinetic energy. If the mass of the truck is four times that of the bike, then calculate the ratio of their momenta. (Ratio of momenta = 1:2)