# Physics

posted by .

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 402 N and F2 = 364 N. (Assume up and to the right as positive directions.)(F1 is 10degrees and F2 is 30degrees)
(a) What is the resultant of these two forces?
magnitude
direction

(b) If the car has a mass of 3,000 kg, what acceleration does it have? Ignore friction.

• Physics -

F1 = 402N @ 10 Deg.
F2 = 364N @ 30 Deg.

a. X = hor. = 402cos10 + 364cos30,
X = 395.9 + 315.2 = 711.1N.

Y = ver. = 402sin10 + 364sin30,
Y = 69.8 + 182 = 251.8N.

tanA = Y/X = 251.8 / 711.1 = 0.3541,
A = 19.5 Deg. = Direction.

M = X/cosA = 711.1 / cos19.5 = 754.4N =
Magnitude.

b. F = ma,
a = F/m = 754.4 / 3000 = 0.25m/s^2

• Physics -

remember if the degrees is negative then subtract it from 360

example:
F1 @ -10 deg
F2 @ 30 deg

F1 is actually @ 350 deg
F2 is still 30 deg

• Physics -

You have to remember that there's no force being created on the x axis, the answer below must've been wrong because of that.

## Similar Questions

1. ### physic

Hi!Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 439 N(10degree) and F2 = 365 N(30degree). (Assume up and to the right as positive directions.) (a) What is the resultant of these …
2. ### physic

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 439 N and F2 = 365 N. (Assume up and to the right as positive directions.) (a) What is the resultant of these two forces?
3. ### Physics

Two forces, 364 N at 19° and 253 N at 32° are applied to a car in an effort to accelerate it. The resultant forces of these two forces is 558.72 N. What is the direction of the resultant force (in relation to forward, with counterclockwise …
4. ### physics

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 416 N and F2 = 363 N. (Assume up and to the right as positive directions.)
5. ### physics

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 428 N and F2 = 358 N. (Assume up and to the right as positive directions.) a) What is the resultant of these two forces?
6. ### physics

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 443 N and F2 = 372 N. (Assume up and to the right as positive directions.) (a) What is the resultant of these two forces?
7. ### Physics

Two forces are applied to a car in an effort to accelerate it, as shown below. The first force, F1 = 364 N, is applied at an angle α = 33° to the forward dashed line. The second force, F2 = 522 N, is applied at an angle β …
8. ### Physics

Two forces are applied to a car in an effort to accelerate it, as shown below. The first force, F1 = 364 N, is applied at an angle α = 33° to the forward dashed line. The second force, F2 = 522 N, is applied at an angle β …
9. ### Physics

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 433 N and F2 = 354 N. (Assume up and to the right as positive directions.) F1 is 10 degrees west of the y axis, F2 is 30 degrees …
10. ### physics

to forces are applied to a car in an effort b to move it ,as shown in figure .a) what is the resultant of these two forces ?

More Similar Questions