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10. Gravitation
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Q2 of 49 Page 10

What is the mass of an object whose weight is 49 newtons?

Weight, W = 49N
Mass, m = ? (To be calculated) Acceleration due to gravity, g = 9.8m/s2
Now putting these values in the formula,
W = m x g
We get, 49 = m x 9.8
m==5kg
Thus, the mass of the object is 5 kilograms.

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1 How much would a 70kg man weigh on the moon? What would be his mass on the earth and on the moon? (Acceleration due to gravity on moon=1.63m/s2). 3 Define range of a projectile. 4 A body of weight 600N rests on the floor of a lift. If the lift begins to fall freely under gravity, what is the force with which the body presses on the floor? 5 State the condition under which a stone attached to a spring balance is said to be weightless.
Questions · 49
10. Gravitation
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