science
Grade-7
Easy
Question
The forces exerted on a tank by two people from opposite directions are shown in the figure below. Find out the net force on the tank, taking the positive reference direction towards the right?
- 116 N
- -116 N
- 12 N
- -12 N
Hint:
Formula for net force is sum of all force. F = F1 + F2 .
The correct answer is: -12 N
- Force = mass × acceleration. In given diagram, applying force is towards right direction that is 52 N.
- So, it would be positive.
- And the force applied towards left direction would be negative that is 64 N as it is opposite to applied force.
- Formula for net force is sum of all force. F = F1 + F2 .
- Net force = 52 N + (-64).
- Net force = -12 N.
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