Answered

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1.calculate the weights of the following masses
1.2kg
2.450g
3.0.75kg
4.3,000,000mg
2.A body weighs 75N.Calculate its mass

Sagot :

cyberoverride

Answer & Explanation:

Formula W = mg where gravitational field strength (g) is 9.81 (take g as 10 in O levels)

1. W = 2 x 9.81 = 19.62 = (20 N when g is 10)

2. W = (450/1000) x 9.81 = 4.4 N (4.5N when g is 10)

3. W = 0.75 x 9.81 = 7.35 N (7.5N when g is 10)

4. 75 = m x 9.81

    m = 75/9.81

    m = 7.64 N  (7.5N when g is 10)

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