The broom handle that she have to balance if she hung a 400g mass from the end of the broom handle is 5.24m
This problem is centered on moment. Moment is the turning effect of a force about a point. It is expressed as:
Moment = Force× Distance
According to principle of moment, the sum of clockwise moment is equal to sum of anticlockwise moment at shown
M1d1 = M2d2
Given the following
M1 = 1.5kg
d1 = 1.4m
M2 = 400g = 0.4kg
d2 is required
Substitute
1.5(1.4) = 0.4d2
2.1 = 0.4d2
d2 = 2.1/0.4
d2 = 5.24m
Hence the broom handle that she have to if she hung a 400g mass from the end of the broom handle is 5.24m
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Answer:
- 0.328J
Explanation:
POTENTIAL ENERGY = mgh
= 0.00274 × 9.81×12.2 here 2.74g = 0.00274kg
= 0.32792868 J
= 0.328J
AS IT IS BELOW THE SURFACE HENCE MUST BE NEGATIVE
hence potential energy = - 0.328J
