SECOND CONDITION FOR EQUILIBRIUM Quiz

Calculate the torque for equilibrium when a force of 10N is applied at a distance of 5m from the pivot point.

• 15Nm

• 50Nm

• 8Nm

• 30Nm

A seesaw is in equilibrium with a 200N person sitting 2m from the pivot point. What force is exerted by a 150N person sitting 3m from the pivot point?

• 100N

• 50N

• 200N

• 75N

Identify the forces in equilibrium when a box is placed on a table.

• Gravitational force and normal force

• Frictional force and tension force

• Centripetal force and kinetic force

• Magnetic force and electrical force

A ladder is leaning against a wall and is in equilibrium. If the ladder is 5m long and the angle between the ladder and the ground is 60 degrees, what is the force exerted by the wall on the ladder?

• 100N

• 500N

• 75N

• 245N

Using the second condition for equilibrium, determine the tension in the rope when a 50N weight is hanging from a pulley system.

• T = 25N

• T = 100N

• T = 75N

• T = 50N

A beam is in equilibrium with a 500N weight hanging 2m from the left end and a 300N weight hanging 3m from the right end. What is the weight of the beam?

• 200N

• 100N

• 600N

• 400N

Apply the second condition for equilibrium to solve the problem of a 100N force pushing to the right and a 80N force pushing to the left on an object.

• Calculate the net torque by multiplying the force and the distance from the pivot point. Set the net torque equal to zero and solve for the unknown distance.

• Calculate the net force by adding the two forces together.

• Use the first condition for equilibrium to solve the problem.

• Apply the third condition for equilibrium to solve the problem.

A car is parked on a hill and is in equilibrium. Analyze the forces acting on the car in this real-life scenario.

• Friction force and air resistance

• Centripetal force and tension force

• Gravitational force and normal force

• Magnetic force and electrical force

Explain the equilibrium of a book resting on a shelf using the second condition for equilibrium.

• The book resting on a shelf is in equilibrium when the sum of the torques acting on it is zero.

• The book resting on a shelf is in equilibrium when the sum of the velocities acting on it is zero.

• The book resting on a shelf is in equilibrium when the sum of the forces acting on it is zero.

• The book resting on a shelf is in equilibrium when the sum of the accelerations acting on it is zero.

Analyze the equilibrium of a bridge under the weight of passing vehicles in a real-life scenario.

• Ignore the forces acting on the bridge

• Consider the forces acting on the bridge

• Calculate the speed of the passing vehicles

• Paint the bridge a different color