Tension

Front

What is tension in physics?

Back

Tension is the force exerted along a rope, string, or cable when it is pulled tight by forces acting from opposite ends.

Front

How do you calculate the tension in a rope when lifting an object?

Back

Tension (T) can be calculated using the formula: T = m(g + a), where m is the mass of the object, g is the acceleration due to gravity (9.81 m/s²), and a is the acceleration of the object.

Front

What is the relationship between tension and weight when an object is in equilibrium?

Back

When an object is in equilibrium (not accelerating), the tension in the rope equals the weight of the object: T = mg.

Front

How does acceleration affect tension in a rope?

Back

If an object is accelerating upwards, tension increases; if it is accelerating downwards, tension decreases compared to the weight of the object.

Front

What is the formula for calculating weight?

Back

Weight (W) is calculated using the formula: W = mg, where m is mass and g is the acceleration due to gravity.

Front

What happens to the tension in a rope when an object is pulled at a constant velocity?

Back

When an object is pulled at a constant velocity, the tension in the rope equals the weight of the object.

Front

How do you find the net force acting on an object?

Back

Net force (F_net) can be calculated using the formula: F_net = T - W, where T is tension and W is weight.

Front

What is the effect of friction on tension when dragging an object?

Back

Friction opposes the motion, so the tension must overcome both the weight of the object and the frictional force to accelerate the object.

Front

How do you calculate the frictional force?

Back

Frictional force (F_friction) can be calculated using the formula: F_friction = μN, where μ is the coefficient of friction and N is the normal force.

Front

What is the normal force?

Back

The normal force (N) is the force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.