1. Name the two effects of force? 2. What can a force do when you stretch the rubber band. 3. Name the Two types of force? 4. Name the types of contact forces 5. A person pulling a cart is a non contact force True or false 6. A girl uses a muscular force to pedal the cycle True or false 7. Name the types of non –contact force? 8. What is SI unit of force is 9. Deepak applies a force of 10N along with Praveen in the same direction with a force of 40N. Then what will be the net force. 10. The force exerted by a charged body on another charged or uncharged body is known as ___________- 11. The force with which two objects attract each other is called ___________________. 12. Pressure =Force/area 13. Larger the area of contact ___________ is the pressure 14. What is the SI Unit of pressure? 15. Frictional forces always opposes__________ 16. Why the truck is fitted with six to eight wheels? 17. Elephants use--------------- force to lift the wood 18. The bicycle comes to rest when we stop pedaling due to ______________. 19. What is static friction? 20. What is friction? 21. Name the three types of friction? 22. What is static friction? 23. What is limiting friction? 24. Name the two types of Kinetic friction? 25. Which of the following exert greater friction? Solid, Liquid or gas 26. Two advantages of friction? 27. Grooves are made in tyres to _________________ friction? 28. Which shape is good for fish to experience minimum amount of friction? 29. Rolling friction is _______________ than sliding friction 30. Bullet trains have ________________- bodies 31. The substances which reduce friction are called ______________. 32. Sound is a form of ____________. 33. What are the characteristics of sound? 34. What are the characteristics of vibration? 35. In which medium sound travels fastest and slowest? 36. The pitch of the sound depends upon the ____________ of vibration. 37. Larger the amplitude of vibration, ____________ is the sound. 38. Name the bones present in the ear? 39. Define audible sound and inauidible sound? 40. Two hamful effects of noise pollution?
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Answers
Answer:
Contact forces are those types of forces which result when the two interacting objects are perceived to be physically contacting each other. Examples of contact forces include frictional forces, tensional forces, normal forces, air resistance forces, and applied forces.
Reaction force. An object at rest on a surface experiences reaction force . ...
Tension. An object that is being stretched experiences a tension force. ...
Friction. Two objects sliding past each other experience friction forces. ...
Air resistance. An object moving through the air experiences air resistance .
A force can produce the following effects:
A force can move a stationary object.
A force can stop a moving object.
A force can change the speed of a moving object.
A force can change the direction of a moving object.
A force can change the shape and size of an object.
Applied Force.
Gravitational Force.
Normal Force.
Frictional Force.
Air Resistance Force.
Tension Force.
Spring Force.
They are in no particular order gravity, electromagnetism, the weak nuclear force and the strong nuclear force.
The strong nuclear force, also called the strong nuclear interaction, is the strongest of the four fundamental forces of nature. It's 6 thousand trillion trillion trillion (that's 39 zeroes after 6!) times stronger than the force of gravity,
Explanation:
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Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.