Question

The weight of the man on earth is 150 N and on certain planet is 25 N. (Take g=10m/s2

on

earth)

a. Find the mass of the man on earth and planet

b. Find the acceleration due to gravity on the planet​

Answer 1

Answer:

a)W = mg [ here w is weight , m is Mass and g is the acceleration due to gravity.] We know the mass remains the same in all places. So the mass of the man is 15 kg on earth and on certain planet.

b)Its value near the surface of the earth is 9.8 ms-2. Therefore, the acceleration due to gravity (g) is given by = GM/r2.

Values of g in CGS: 980 cm s-2

Formula: g = GM/r2

Dimensional Formula: M0L1T-2

Values of g in SI: 9.806 ms-2

Explanation:

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Answer 2

Answer:

(a)Mass=15 kg

(b) 1.66m/s^2

Explanation:

On earth

F=M×a (F=150N given ; a=10m/s^2 given)

M=F/a = 150N/10 = 15kg

On another planet

F=M×a (F=25N given ; M=15 kg *because mass is same every where)

therefore

a=F/M = 25/15 =1.66 m/s^2