Question

The Normal force always opposes the Weight force.

A.)True

B.)False

If a ball on a string is being spun around in a circle that is perpendicular to the ground, at what point of the ball’s motion is it being pulled on by the rope the hardest?

A.)At the bottom

B.)At the top

C.)45 degrees from top

D.)90 degrees from top

Answer 1

• The normal force by the surface on a body is the reaction force of the weight of the object.

Hence, wwe can say that normal force is always opposes the weight force.

hence, this statement is true. Hence, correct option is (A.)True

• The tension in the string at the lowest point and is given by, T = mg + mv²/r

The tension in the string at the top is given by,   T = mg - mv²/r

The tension in the string at 90 degrees from top is given by,   T = mv²/r

Hence, tension in the string will be maximum at the bottom.

hence, the correct option is (A) At the bottom.