To determine the force exerted by the sarp-rassi (rope) on Nagraj, we need to consider the gravitational force acting on Nagraj.
The gravitational force can be calculated using the formula:
[F = mg]
Where:
- (F) is the gravitational force
- (m) is the mass of the object (Nagraj in this case)
- (g) is the acceleration due to gravity (given as 10 units)
Given that the mass of Nagraj is 8 kg and (g = 10), we can substitute these values into the formula to calculate the gravitational force:
[F = 8 \times 10 = 80 \text{ newton}]
Therefore, the force exerted by the sarp-rassi on Nagraj is 80 newton.
The correct answer is option C, 80 newton.