Table of Contents
How much work is done when a 2kg object is pulled upward?
No work is done. An approximately 2-kg object is pulled upward at constant speed by a 20-N force for a vertical displacement of 5 m. F grav and F tens do work. Forces do work when there is some component of force in the same or opposite direction of the displacement. 3.
What is the relationship between force and Mass in physics?
F = m a Newton’s second law states that force is proportional to what is required for an object of constant mass to change its velocity. This is equal to that object’s mass multiplied by its acceleration.
What is the work done by gravity on a 15 kg box?
A 15 kg box falls at angle 25 ∘ from a height of 10 m. Determine the work done by gravity. Therefore, the work done by gravity is 1332 J.
How much force does it take to lift a 784-newton person?
Determine the amount of work done by the student to elevate his body to this height. Assume that his speed is constant. The student weighs 784 N (F grav = 80 kg * 9.8 m/s/s). To lift a 784-Newton person at constant speed, 784 N of force must be applied to it (Newton’s laws).
How to calculate the amount of work done on an object?
The amount of work done upon an object depends upon the amount of force (F) causing the work, the displacement (d) experienced by the object during the work, and the angle (theta) between the force and the displacement vectors. The equation for work is W = F*d*cosine(theta)
How much force does it take to lift a 15-newton block?
To lift a 15-Newton block at constant speed, 15-N of force must be applied to it (Newton’s laws). Thus, 7. A student with a mass of 80.0 kg runs up three flights of stairs in 12.0 sec. The student has gone a vertical distance of 8.0 m. Determine the amount of work done by the student to elevate his body to this height.
How much potential energy is gained when an object is lifted vertically?
An object gains 15 joules of potential energy as it is lifted vertically 5.0 meters. If a second object with one-half the mass is lifted vertically 5.0 meters, the potential energy gained by the second object will be what?