Question

4)a) How does the weight of an object vary with respect to mass and radius of the earth? b) Alka weighs 550 N on earth. (i) What will be Alka mass on Earth (g=10 ms-2) (ii) On the planet Mars, the force of gravity is 58% of that of Earth. How much will Alka weigh on Mars? (3)​

Answer 1

Answer:

a) Weight of an object is directly proportional to the mass of the earth and inversely proportional to the square of the radius of the earth.

b) (i) Weight=550N

g on Earth= 10

$mass = \frac{550}{10}$

mass = 55 kg

(ii) Weight =550N

On Mars g`= 58% of Earth

$\ \frac{58}{100} \times 10$

g`=5.8

So, weight on Mars= 55 × 5.8

= 319 N