MCQ
When a toothpaste tube is squeezed, its shape changes. The force responsible for this is an example of:
- ABalanced forces.
- BCentripetal forces.
- CUnbalanced forces.
- DCentrifugal forces.
Explanation:
This is because a balanced force changes the shape of the object.
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A girl weighing 400N climbs a vertical ladder. If the value of g be 10ms2, the work done by her after climbing 2m will be: