हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

On what factors does the effect of thrust on a surface depend? - Physics

Advertisements
Advertisements

प्रश्न

On what factors does the effect of thrust on a surface depend?

संक्षेप में उत्तर
Advertisements

उत्तर

The effect of thrust depends on the area of the surface on which it acts. Smaller the area of the surface on which a thrust acts, larger is its effect. But the effect of a thrust is less on a larger area.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Force and Pressure - Short/Long Answer Questions [पृष्ठ ५७]

APPEARS IN

सेलिना Concise Physics [English] Class 8 ICSE
अध्याय 3 Force and Pressure
Short/Long Answer Questions | Q 16 | पृष्ठ ५७

संबंधित प्रश्न

A nut is opened by a wrench of length 20 cm. If the least force required is 2N, find the moment of force needed to loosen the nut.


To obtain a given moment of force for turning a body, the force needed can be decreased by


What do you mean by the clockwise and anti-clockwise moment of force?


State Newton's Second law of motion. Under what conditon does it take the form F = ma?


A body X of mass 5 kg is moving with velocity 20 m s-2 while another body Y of mass 20 kg is moving with velocity 5 m S-1. Compare the momentum of the two bodies.


Write the expression for calculating the moment of force about a given an axis.


Classify the following amongst contact and non-contact forces.
Frictional force


Fig.  shows a uniform meter scale weighing 100 N pivoted at its centre. Two weights of 500 N and 300 N are hung from the ruler as shown in fig.

(i)    Calculate total clockwise and anticlockwise moments.
(ii)    Calculate difference in clockwise moment and anticlockwise moment.
(iii)    Calculate the distance from O where a 100 N weight should be suspended to balance the meter scale.


The perpendicular distance between the point of application of force and turning point is 1.75 m when a force of 80 N acts on a rigid body. Calculate the moment of force.


A metal rod AB of length 80 cm is balanced at 45 cm from the end A with 100 gf weights suspended from the two ends.

  1. If this rod is cut at the center, C, then compare the weight of AC to the weight of BC. (Use >, < or =)
  2. Give a reason for your answer in (a).

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×