Answer:
N = 337.96 N
Explanation:
∅ = 32º
F = 249 N
m = 21 Kg
N = ?
We can apply:
∑ F = 0 (↑)
- Fy - W + N = 0 ⇒ N = Fy + W
⇒ F*Sin ∅ + m*g = N
⇒ N = (249 N*Sin32º) + (21 Kg*9.81 m/s²)
⇒ N = 337.96 N (↑)
Answer:
Explanation:
Since the particle is experimenting a constant acceleration, the displacement can be found by using this formula:
Since , the equation is simplified to this form:
Then, the displacement is now isolated:
Terms are replaced herein:
S ?
U 0m/s
V ?
A 0.1m/s^2
T 2min (120 sec)
S=ut+0.5at^2
S=0(120 sec)+0.5(0.1m/s^2)(120 sec)^2
S=720m
Distance double 720m*2=1440m
V^2=u^2+2as
V^2=(0)^2+2(0.1 m/s^2)(1440m)
V^2=288
V= square root of 288=12 root 2=16.97 to 2 decimal places
Explanation:
Given parameters:
Mass of forklift = 750kg
Height of lift = 18m
Time taken = 28s
Unknown:
Work done = ?
Power = ?
Solution;
The work done by the forklift is given as:
Work done = mass x acceleration due to gravity x height
Work done = 750 x 9.8 x 18 = 132300J
Power is the rate at which work is done;
Power =
Insert the parameters and solve;
Power = = 4725W
Since the rabbit is moving at constant velocity, therefore
the acceleration is zero, hence the increase in distance over time would simply
be:
x = v t
where v is velocity and t is time, x is distance
Since we are starting at x = 8.1 m, the equation of motion
would therefore be:
<span>x = 8.1 – 1.6 t</span>