TORQUE AND ROTATIONAL MOTION

Question 1

is a measure of the tendency of a force to produce a change in rotational motion

Answer 1

Torque

Question 2

can refer to a line about which a body rotates.

Answer 2

axis

Question 3

refers to the perpendicular distance between the line of action of a force and the pivot point or axis of rotation.

Answer 3

Lever arm (r)

Question 4

is an imaginary straight line that extends through the direction in which a force is applied. It represents the path along which the force acts, and it helps to determine how the force influences motion, especially in rotational dynamics.

Answer 4

Line of action of a force

Question 5

Torque:
-is positive (+) if the resulting rotation is __________

-is negative (-) if the resulting rotation is __________

Answer 5

counterclockwise, clockwise

Question 6

A force of 50 newtons is applied to a wrench that is 30 centimeters long. Calculate the torque if the force is applied perpendicular to the wrench so the lever arm is 30 cm. Express in SI units.

Answer 6

t = -15 N.m

Question 7

A boy and his cat sit on a seesaw. The cat has a mass of 4 kg and sits 2 m from the center of rotation. If the boy has a mass of 50 kg, where should he sit so that the see-saw will balance?

Answer 7

r = 0.16m

Question 8

is a state in which an object is not rotating. In a state of equilibrium, we can express the net torque as 0.

Answer 8

Rotational Equilibrium

Question 9

Any object has tendency to resist any change in its motion. It is called _______

Answer 9

Inertia

Question 10

The tendency to resist any Rotational Motion is _____________

Answer 10

Moment of Inertia