A. 300N
B. 600N
C. 1200N
D. 400N
Correct Answer:
Option C – 1200N
Explanation
F = Ma + mg = 60 x 10 x 60 x 10 = 1200N
What force has to be exerted on a mass 60kg to give it an acceleration of 10ms−² vertically upwards? [g = 10ms−²]
![A body of mass 20g projected vertically upwards in vacuum returns to the point of projection after 1.2s. [g = 10ms‾²]. Calculate the speed of projection](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A body of mass 20g projected vertically upwards in vacuum returns to the point of projection after 1.2s. [g = 10ms‾²]. Calculate the speed of projection")
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