1. Can the value of coefficient of friction is more than one.
2. Establishing Newton's third law from Newton's second law of motion.
3. Person is standing on the one end of a plank of mass and length l is floating in water . The person moves from one and to another end and stops. Find the displacement of the plank .
4. Train is moving with the constant acceleration a . A pendulum suspended from the selling of the train. At equilibrium find the angle made by the pendulum with the vertical.
5. A body is kept on a rough horizontal plane. The plane is then gradually rised an inclination 30° the horizontal. At 30° angle the inclination the body will tend to move. When the inclination rises like you more than 30° then the body descent 4 m in 4 second find the coefficient of static friction and kinetic friction between the block and the rough plane.
6. Why it is easier to pulling a cart instead of pushing ?
7. The upper half of an inclined plane with internation 60° is perfectly smooth while the lower house is rough. The body starting from rest at the top we again come to rest at the bottom if the coefficient of friction for the lower half is given by.
8. Action and reaction are equal and opposite why cannot the cancel each other?
9. What is the angular friction between two switches in contact if the coefficient of friction is (1/3) ½?
10. Spring balance is attached to the ceiling of a lift. A man hangs his back on the spring and the spring reads 49 N , when the lift is stationary. What will be the reading of the spring balance if the lift moves downward with an acceleration 5 m/s ²?
Solution comming soon
No comments:
Post a Comment