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Showing posts with label gravitation. Show all posts
Showing posts with label gravitation. Show all posts

Thursday, 3 October 2019

In what direction does the buoyant force on an object immersed in a liquid act

Force of floatation work upward in vertical position

What is the SI unit of thrust

Newton

Relation between Force and Pressure

 Pressure (P) = Force (F)/Area (A)

When a ball is thrown up in vertical position the direction of the gravitational acceleration

Opposite to the direction of its moment

Equation for freely falling object


  1. v = u + gt
  2. h = it +  ½gt²
  3. v² - u² = 2gh

Is weight an scalar quantity or a vector

 vector

Where will the weight of an object will be highest on poles or an equator

The weight of an object will be here on poles because the value of g is Greater there

What is the relation between mass and weight

 W=mg

What is the value of radius of the earth on poles

6357 kilometre

What is the value of radius of the earth on equator

6378 kilometre

what is the value of radius of earth

6.4 × 10^6 m

what is the mass of earth

6×10²⁴kg

by which instrument is weight measured

 Spring balance

By which measurement is the mass of an object measured

Physical balance

What is the SI unit of pressure

 Newton/m² or Pascal

What is the SI unit of weight

Newton

What is the SI unit of mass

 Kg

what is gravitational acceleration of free fall

9.8 m/s²

The force between two objects if the mass of both objects are doubled

It will become 4 times

Force between two objects if if the distance between the objects is double and triple

 the gravitation forth will became are forth on doubling the distance between two objects. The force of gravity will become 1/9  on tripling the distance between two object