Angled Forces
A 50 Newton force is exerted on a block at an angle of 25 degrees. What are the x and y components of this force?
Fx= 45.3
Fy= 21.1
On an inclined plane, which direction are the x and y axes?
X axis is along the incline
Y axis is perpendicular to the incline
A computer base unit of mass 10 kg is dragged along a smooth desk. If the person dragging it exerts a force of 40 Newtons at 25◦ above the horizontal, what is the acceleration of the base unit?
3.6 m/s2
A skier, mass of 80 kg, slides down a hill angled at 25 degrees. Using the inclined plane coordinate system, what are the x and y components of the gravitational force on the skier?
Fx = 331 Newtons
Fy = 710 Newtons
A trick or treater carries their bag of candy at a constant speed with a force of 10 Newtons with an angle of 25 degrees. What friction force must oppose the bag?
9.06 Newtons
Santa’s sleigh, mass of 3500 kg, starts from rest and descends down a rooftop, inclined at 20 degrees. What is the acceleration of Santa's sleigh?
3.35 m/s2
In order to prank his class, Mr Composto hangs a toy skeleton behind the class door. The skeleton is held up by 2 strings each exerting a force of 35 Newtons at an angle of 45 degrees. What is the mass of the skeleton?
5.05 kg
A skier slides down a hill, this one angled at 60 degrees. This hill has a lot of snow and has a coefficient of friction of 0.125. What is the skier’s acceleration?
7.88 m/s2
X is along the incline
Y is perpendicular to the incline
Spiderman shoots his web at the green goblin, mass of 50 kg, and pulls him towards him at a constant speed. If Spiderman’s webs exert a force of 90 Newtons at an angle of 30 degrees, what normal force is exerted upward on the green goblin and what is the magnitude of the opposing horizontal friction force? (Assume the green goblin is dragged on the ground and doesn’t move vertically)
FNormal= 445 Newtons
Ffriction= 77.94 Newtons
Superman pulls a car, mass of 1550 kg, up a collapsed bridge angled at 75 degrees with a force of 25,000 Newtons. How long will it take Superman to save the people in the car if the incline is 55 meters long?
4.06 seconds
A student claims that a 20 kg object and a 30 kg object will both have the same acceleration on a frictionless inclined plane at an angle of 25 degrees. Is the student correct? Explain why
Yes the student is correct, the acceleration down an inclined plane in the absence of friction only depends on the angle of the incline and not the mass