A body weighs 72n on surface of the earth

Asked by admin @ 17/08/2021 in Physics viewed by 289 People

a body weighs 72N on the surface of the earth. what will be the force of vravity acting on the body at a height equal to half the radius of the earth above the earth's surface.answer it only if you know.answer with the ezplanation. ill mark it as the brainliest who answers first and will thank you. and the points you get are 50p.

Answered by admin @ 17/08/2021

According to Newton's gravitational law,
$W_f=\frac{W}{\left(1+\frac{h}{r}\right)^2}$

here W is the weight of body on he surface of earth, h is the height of body from the surface of earth, r is the radius of earth.

here, weight to body , W = mg = 72N on the surface of earth. we have to find out weight of body at a height equal to half the radius of the earth above the earth's surface.
so, h = r/2
so, weight of body = $\frac{72}{\left(1+\frac{r/2}{r}\right)^2}$
= 72/(1 + 1/2)² = 72/(3/2)² = 72 × 4/9 = 32N

A hair dryer with a resistance of 9.6 ohms operates at 120 volts for 2.5 minutes. the total electrical energy used by the dryer during this time interval is

Asked by maham237 @ 13/01/2021 in Physics viewed by 1204 persons

Mind map for light reflection and refraction class 10

Asked by admin @ 23/08/2021 in Physics viewed by 1146 persons

The african cicada is the world's loudest insect, producing a sound intensity level of 107 db at a distance of 0.50 m. what is the intensity of its sound (in w/m2) as heard by someone standing 3.1 m away? express your answer in watts per meter squared.

Asked by maham237 @ 10/01/2021 in Physics viewed by 1098 persons

A thief runs at a speed of 10m s

Asked by admin @ 23/08/2021 in Physics viewed by 1095 persons

A 5.8 x 10 4 watt elevator motor can lift

Asked by maham237 @ 20/06/2021 in Physics viewed by 1080 persons

A body weighs 72n on surface of the earth

Similar Questions

How does earth's temperature change with depth below the surface

When a body falls freely towards the earth

The earth has volume v and surface area a

Two thirds of the earth's surface is covered by water

What do you call all the water on earth's surface

What about earth allows it to maintain bodies of water

What does the author compare the earth's surface to

Which type of tissue covers the surface of the body

The celestial body nearest to the earth is

How much of the earth's surface _____ by water

The surface of the earth is made up of

You are standing on the surface of the earth

What is the surface of the earth made up of

The top layer of the earth's surface is called what

What is the difference between body waves and surface waves

Most viewed questions in Physics

Jeevandeep health and physical education std 10 answers pdf

Hc verma physics class 9 solutions of describing motion

How to leave nightmare land answer key

Base area and stability of some objects with different shapes

Which of the following statements about safe lifting are correct

Porous water-absorbing mass of fibers

Absorption of water by filter paper is due to

A composite wire of uniform diameter 3mm

At a distance l 400m from the traffic light

A rocket of mass m is launched straight up with thrust f⃗ thrust.

A hair dryer with a resistance of 9.6 ohms operates at 120 volts for 2.5 minutes. the total electrical energy used by the dryer during this time interval is

Mind map for light reflection and refraction class 10

The african cicada is the world's loudest insect, producing a sound intensity level of 107 db at a distance of 0.50 m. what is the intensity of its sound (in w/m2) as heard by someone standing 3.1 m away? express your answer in watts per meter squared.

A thief runs at a speed of 10m s

A 5.8 x 10 4 watt elevator motor can lift