मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएचएससी विज्ञान इयत्ता ११

Suggest a few methods to reduce friction. - Physics

Advertisements
Advertisements

प्रश्न

Suggest a few methods to reduce friction.

टीपा लिहा

उत्तर

Methods to reduce friction:

Friction can be reduced

  • By using lubricants
  • By using Ball bearings
  • By polishing
  • By streamlining
shaalaa.com
Friction
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Laws of motion - Evaluation [पृष्ठ १६२]

APPEARS IN

सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 11 TN Board
पाठ 3 Laws of motion
Evaluation | Q II. 6. b. | पृष्ठ १६२

संबंधित प्रश्‍न

An object of mass m begins to move on the plane inclined at an angle θ. The coefficient of static friction of inclined surfaces is µs. The maximum static friction experienced by the mass is ______


State the empirical laws of static and kinetic friction.


Two masses m1 and m2 are connected with a string passing over a frictionless pulley fixed at the comer of the table as shown in the figure. The coefficient of static friction of mass mwith the table is µs Calculate the minimum mass m3 that may be placed on m1 to prevent it from sliding. Check if m1 = 15 kg, m2 = 10 kg, m3 = 25 and µs = 0.2.

 


Briefly explain ‘rolling friction.'


A heavy uniform chain lies on a horizontal table. If the coefficient of friction between the chain and the table is 0.25, then the maximum fraction of the length of the chain that can hang over one edge of the table is


A block of mass 20 kg is sliding on a surface is inclined at an angle of 45° with the horizontal. What will be the acceleration of the block if the coefficient of kinetic friction between the block and the surface is 0.7?


If a body of mass m is moving on a rough horizontal surface of coefficient of kinetic friction µ, the net resultant force exerted by surface on the body is ______.


A 40 kg wooden crate is being pushed across a wooden floor with a force of 160 N. If µk = 0.3, the acceleration of the crate is ______ m/s2. (g = 10 m/s2}


The minimum radius of a circle along which a cyclist can ride with a velocity 18 km/hr if the coefficient of friction between the tyres and the road is µ = 0.5, is ______ (Take g = 10 m/s2)


Block A has a mass of 2 kg and block B has 20 kg. If the coefficient of kinetic friction between block B and the horizontal surface is 0.1, and B is accelerating towards the right with a = 2 m/s2, then the mass of the block C will be ______.

(g = 10 m/s2)

 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×