Question

PUBLIC SCHOOLS

Pre-AP Physics Mastery Ticket #1
Unit 1: Equilibrium
TEKS: P.2 (D, E, G) P.4 (B,D)
1. A 50kg cart is currently in dynamic equilibrium. Which of the
following claims is true?
A. The cart is experiencing unbalanced forces.
B. The cart is at rest
C. The cart is accelerating
D. The cart is moving at a content speed or velocity

Answer 1

D. The cart is moving at a constant speed or velocity

Step-by-step explanation:

Equilibrium is a state of body in which it is either at rest or moves with uniform velocity. The sum of forces acting on such a body is always zero and the sum of all the torques acting on it is also zero.

There are two types of equilibrium as follows:

Static Equilibrium: When a body is at rest it is said to be in static equilibrium.

Dynamic Equilibrium: When a body is moving with constant velocity, then it is said to be in dynamic equilibrium.

Hence, the correct option here will be:

D. The cart is moving at a constant speed or velocity