Daniel and Jonathan Are Playing on the Seesaw with Their

question 50

Multiple Choice

Daniel and Jonathan are playing on the seesaw with their mother in the park. The 6-m long uniform board is hinged at its midpoint. If Daniel and Jonathan weigh 30kg and 20kg and sit at distances of 2m and 3m respectively from the fulcrum, calculate where their mother (mass = 60 kg) has to sit on the other side of the fulcrum for static equilibrium.

• A) 2.5 m
• B) 1.5 m
• C) 1.0 m
• D) 2.0 m
• E) none of the above

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Definitions:

Artificial Wetland

Man-made ecosystems constructed to mimic natural wetlands, serving purposes such as wastewater treatment, flood control, and habitat creation.

Selection Cutting

A forestry technique that involves the selective removal of certain trees in an effort to promote growth and maintain the health and diversity of a forest.

Strip Cutting

A method of logging whereby trees are clear-cut in narrow strips to allow for natural regeneration from the sides.

Forest Management

The practice of planning and implementing activities to maintain and enhance the health, productivity, and diversity of forests for the benefit of current and future generations.