science
Grade-7
Easy
Question
The figure below shows two boys hanging from a branch of a tree. The weight of the two boys is equal, i.e., 437 N each. What is the net force that they exert on the branch?
- 0
- 437 N, upwards
- 523 N, downwards
- 874 N, downwards
Hint:
As the force from both the boys is in same direction net force will be in positive term.
The correct answer is: 874 N, downwards
- Here, branch is an object on which force is being applied.
- As the boys are hanging on it, direction of force applied will be downwards equal to the gravitational pull.
- As the force from both the boys is in same direction net force will be in positive term.
- Net force = 437 N + 437 N = 874 N.
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