Home
Class 10
PHYSICS
Explain why scissors for cutting cloth m...

Explain why scissors for cutting cloth may have blades longer than the handles, but shears for cutting metals have short blades and long handles.

Text Solution

Verified by Experts

In scissors for cutting clothes, we don.t need gain torque , rather we need gain in speed. Hence, blades are much longer than handles.
Promotional Banner

Topper's Solved these Questions

  • SAMPLE QUESTION PAPER 2

    ICSE|Exercise SECTION-B|32 Videos

  • SAMPLE QUESTION PAPER 1

    ICSE|Exercise SECTION .B.|36 Videos

  • SAMPLE QUESTION PAPER 4

    ICSE|Exercise SECTION B|38 Videos

Similar Questions

Explore conceptually related problems

A force of 5 kgf is required to cut a metal sheet. A pair of shears used for cutting the metal sheet has its blades 5 cm long, while its handles are 10 cm long. What effort is needed to cut the sheet ?

A pair of scissors has its blades 15 cm long, while its handles are 7*5cm long. What is its mechanical advantage ?

Explain why Alkenes have higher melting points than the alkanes with the same carbon skeleton.

Explain why angiosperms have been more successful than gymnosperms.

A man wants to cut three lengths from a single piece of board of length 91cm The second length is to be 3 cm longer than the shortest and the third length is to be twice as long as the shortest. What are the possible lengths of the shortest board if the third piece is to be at least 5cm longer than the second?

Antiseptic solution used to wash cuts and wounds in the body have surface tension lower than water. What is its advantages ?

Why do alkaline earth metals have higher melting points than group 1 elements ?

(a) Why alkaline earth metals are harder, have higer melting ponts and higher densities than the alkali metals? (b). Why the atoms of alkaline earth metals are smaller than the corresponding alkali metals? (c ). Why alkaline earth metals have high electrical and thermal conductivities? (d). What is black ash? (e). Why the variation in physical properties of alkaline earth elements is not as regular as in the case of alkali metals?

(i) Draw a neat labelled ray diagram of a compound microscope . Explain briefly its working . (ii) Why must both the objective and the eye-piece of a compound microscope have short focal lengths ?

ICSE-SAMPLE QUESTION PAPER 2-SECTION-B
  1. Explain why scissors for cutting cloth may have blades longer than the...

    Text Solution

    |

  2. Show that the sum of kinetic energy and potential energy (ie, total me...

    Text Solution

    |

  3. A uniform metre rod is balanced at the 70 cm mark by suspending a weig...

    Text Solution

    |

  4. Draw a diagram of a pulley system of velocity ratio 4. Calculate its m...

    Text Solution

    |

  5. What is understood by lateral displacement? State two factors on which...

    Text Solution

    |

  6. An object is kept at a distance of 15 cm from a convex lens of focal l...

    Text Solution

    |

  7. Write two properties common to all the electromagnetic radiations.

    Text Solution

    |

  8. Name two sources, each of infrared radiations and ultraviolet radiatio...

    Text Solution

    |

  9. A vibrating tuning fork is placed over the mouth of a burette filled w...

    Text Solution

    |

  10. A vibrating tuning fork is placed over the mouth of a burette filled w...

    Text Solution

    |

  11. Define the power of a lens.

    Text Solution

    |

  12. A child is using a spectacle with power of -2.5 D. What is meant by th...

    Text Solution

    |

  13. Find the focal length of the lens used.

    Text Solution

    |

  14. A man standing in front of a wall produces a sound and hears an echo a...

    Text Solution

    |

  15. What characteristics should a fuse wire have?

    Text Solution

    |

  16. Name two factors on which the internal resistance of a cell depends an...

    Text Solution

    |

  17. In the circuit diagram given below, a cell of 9 V and internal resista...

    Text Solution

    |

  18. In the circuit diagram given below, a cell of 9 V and internal resista...

    Text Solution

    |

  19. In the circuit diagram given below, a cell of 9 V and internal resista...

    Text Solution

    |

  20. In the circuit diagram given below, a cell of 9 V and internal resista...

    Text Solution

    |

  21. Define latent heat of fusion of ice.

    Text Solution

    |