Q 1: which of the following conditions occur when an object is in static equilibrium ? (can be more than one option)

a. net force on the object is zero
b. net torque on the object is zero
c. acceleration of the object is zero
d. velocity of the object is zero

Q2: Student A pulls on a wrench with 10 N a distance 5 cm from a bolt. Student B pulls on a wrench with 5 N a distance of 12 cm from a bolt. Which student applied a greater torque? (Both students applied the force perpendicular to the wrench handle.)

A. student A
B. Student B
C. Neither, they apply the same torque
D. not enough information

Q3: true of false: when computing the torque on an object, you must select an axis about which you compute the torque?

Q4: Consider a beam that is supported at its ends. Which statement best describes the forces from the supports.

a. force on one of the ends will be greater than the other
b.the force on the two ends are equal
c. not enough information

If an object is at rest and is in a state of equilibrium, then we would say that the object is at "static equilibrium." "Static" means stationary or at rest.

I will be happy to critique your thinking on the remainng three.

1.a 2.b 3. true 4. b

A1: The conditions that occur when an object is in static equilibrium are:

a. The net force on the object is zero.
b. The net torque on the object is zero.
c. The acceleration of the object is zero.
d. The velocity of the object is zero.

A2: To determine which student applied a greater torque, we need to calculate the torque for each student using the formula T = F * r, where T is the torque, F is the applied force, and r is the distance from the bolt.
Calculating the torque for Student A: T_A = 10 N * 0.05 m = 0.5 Nm
Calculating the torque for Student B: T_B = 5 N * 0.12 m = 0.6 Nm

Based on the calculations, Student B applied a greater torque.

A3: True. When computing the torque on an object, you must select an axis about which you compute the torque. The axis is usually chosen based on the point where the force is applied or where the object can rotate.

A4: The correct statement is: b. The force on the two ends is equal. When a beam is supported at its ends, the support forces need to balance each other for the beam to remain in static equilibrium, resulting in equal forces on both ends.

Q1: In order for an object to be in static equilibrium, the following conditions must occur:

a. The net force on the object is zero: This means that the sum of all the forces acting on the object in any direction is zero. This condition ensures that the object remains at rest or in a constant velocity state.

b. The net torque on the object is zero: Torque is a rotational force that causes an object to rotate. In static equilibrium, the sum of all the torques acting on the object must be zero. This condition ensures that the object does not rotate about a fixed point.

c. The acceleration of the object is zero: Since the object is at rest or in a constant velocity state, its acceleration must be zero. This condition ensures that the object remains in its current state.

d. The velocity of the object is zero: If an object is in static equilibrium, its velocity is zero. This condition means that the object is not moving.

Q2: To determine which student applied a greater torque, we use the formula for torque, which is given by the equation:

Torque = Force * Distance

Student A applied a force of 10 N, and the distance from the bolt is 5 cm (0.05 m). Therefore, the torque exerted by Student A is:

Torque(A) = 10 N * 0.05 m = 0.5 N*m

Student B applied a force of 5 N, and the distance from the bolt is 12 cm (0.12 m). Therefore, the torque exerted by Student B is:

Torque(B) = 5 N * 0.12 m = 0.6 N*m

From the calculations, we can see that Student B applied a greater torque with a value of 0.6 N*m. Therefore, the answer is B. Student B.

Q3: True. When computing the torque on an object, you must select an axis about which you compute the torque. The axis is chosen based on the specific situation and the forces involved. The torque depends on the perpendicular distance between the axis and the line of action of the force.

Q4: The correct answer is b. The force on the two ends of the beam is equal. In a beam that is supported at its ends, the forces acting on the beam from each support must be equal in magnitude and opposite in direction. This equilibrium is necessary to keep the beam balanced and prevent it from collapsing or rotating.