an object of mass 2 kg falls from a height of 5 m to the ground. what is the work done by the gravitational force on the object? (neglect air resistance; take g = 10 m s2)?
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Answer:
In this case the force acting on the object is downward gravitational force . This is a constant force.
The object also moves downward which is in the direction of gravitational force () as shown in figure. Hence, the angle between them is θ = 0° cos0° = 1 and the displacement, (rf - r1) = 5m
Explanation:
The work done by the gravitational force on the object is positive.
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