A stone weighs 490N on a planet whose acceleration due to gravity is half that of the earth. Calculate
(i) the mass of the stone
(ii) the weight of the stone on the earth
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Answer:
TOTAL MASS = WEIGHT / ACCELERATION DUE TO GRAVITY
ACCELERATION DUE TO GRAVITY IS ACTUALLY 9.8 M/S
IN THIS CASE ACCELERATION DUE TO GRAVITY IS HALF SO , 9.8/2
WHICH GIVES YOU 4.9 M/S
(i) MASS = WEIGHT/ ACCELERATION DUE TO GRAVITY
MASS = 490/4.9
MASS = 100 N
(ii) THE WEIGHT OF STONE ON EARTH MIGHT BE 490/9.8 = 50N .
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