What is the outward force acting on a mass of 10 kg tied to one end of an inelastic string 10m long and rotated at a speed of 1m/s?
Correct answer: A. 1 N
- A. 1 N
- B. 2 N
- C. 2.5 N
- D. 10 N
Explanation
The question involves determining the outward force acting on a mass in circular motion, given its mass, velocity, and radius. The centripetal force required to keep an object rotating in a circle is calculated using the formula F = (m * v^2) / r, where m is the mass, v is the velocity, and r is the radius. In this case, with a mass of 10 kg, velocity of 1 m/s, and radius of 10 m, the outward force is 1 N. This force is necessary to maintain the object's circular path. The incorrect options provide values that do not match the calculated result, emphasizing the importance of correctly applying the centripetal force formula.
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About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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